Annual report pursuant to Section 13 and 15(d)

RESTATEMENT - Parenthetical (Details)

v3.19.2
RESTATEMENT - Parenthetical (Details)
$ in Millions
 12 Months Ended
Mar. 31, 2017
USD ($)
Investigation Matter [Member] | Sales [Member]  
Quantifying Misstatement in Current Year Financial Statements, Amount $ 11.9
Investigation Matter [Member] | Cost of Sales [Member]  
Quantifying Misstatement in Current Year Financial Statements, Amount 4.5
Investigation Matter [Member] | Income Before Tax [Member]  
Quantifying Misstatement in Current Year Financial Statements, Amount 7.4
Investigation Matter [Member] | Accounts Receivable Current [Member]  
Quantifying Misstatement in Current Year Financial Statements, Amount 13.6
Investigation Matter [Member] | Other Accrued Liabilities Current [Member]  
Quantifying Misstatement in Current Year Financial Statements, Amount 0.5
Investigation Matter [Member] | Manufacturing Inventories [Member]  
Quantifying Misstatement in Current Year Financial Statements, Amount 8.6
Investigation Matter [Member] | Deferred Revenue Current [Member]  
Quantifying Misstatement in Current Year Financial Statements, Amount 4.1
Service Revenue Convention [Member] | Sales [Member]  
Quantifying Misstatement in Current Year Financial Statements, Amount 1.6
Service Revenue Convention [Member] | Income Before Tax [Member]  
Quantifying Misstatement in Current Year Financial Statements, Amount 1.6
Service Revenue Convention [Member] | Deferred Revenue Current [Member]  
Quantifying Misstatement in Current Year Financial Statements, Amount 3.5
Service Revenue Convention [Member] | Deferred Revenue Non Current [Member]  
Quantifying Misstatement in Current Year Financial Statements, Amount 1.3
Misstatements of Cash Consideration Paid [Member] | Sales [Member]  
Quantifying Misstatement in Current Year Financial Statements, Amount 2.0
Misstatements of Cash Consideration Paid [Member] | Selling and Marketing Expense [Member]  
Quantifying Misstatement in Current Year Financial Statements, Amount 2.0
Sales Tax Accrual Misstatement [Member] | Accounts Receivable Current [Member]  
Quantifying Misstatement in Current Year Financial Statements, Amount 0.5
Sales Tax Accrual Misstatement [Member] | Other Accrued Liabilities Current [Member]  
Quantifying Misstatement in Current Year Financial Statements, Amount 0.5
Warranty Accrual Misstatement [Member] | Cost of Sales [Member]  
Quantifying Misstatement in Current Year Financial Statements, Amount 0.4
Warranty Accrual Misstatement [Member] | Income Before Tax [Member]  
Quantifying Misstatement in Current Year Financial Statements, Amount 0.4
Warranty Accrual Misstatement [Member] | Other Accrued Liabilities Current [Member]  
Quantifying Misstatement in Current Year Financial Statements, Amount 0.4
Commissions Accrual Misstatement [Member] | Income Before Tax [Member]  
Quantifying Misstatement in Current Year Financial Statements, Amount 0.7
Commissions Accrual Misstatement [Member] | Selling and Marketing Expense [Member]  
Quantifying Misstatement in Current Year Financial Statements, Amount 0.7
Commissions Accrual Misstatement [Member] | Employee Related Liabilities Current [Member]  
Quantifying Misstatement in Current Year Financial Statements, Amount 1.4
Short Term Disability Plan Accounting Misstatement [Member] | Employee Related Liabilities Current [Member]  
Quantifying Misstatement in Current Year Financial Statements, Amount 1.1
Short Term Disability Plan Accounting Misstatement [Member] | Restricted Cash [Member]  
Quantifying Misstatement in Current Year Financial Statements, Amount 1.1
Third Party Contracts Misstatements [Member] | Payable Accounts [Member]  
Quantifying Misstatement in Current Year Financial Statements, Amount 0.8
Third Party Contracts Misstatements [Member] | Other Current Assets [Member]  
Quantifying Misstatement in Current Year Financial Statements, Amount 0.8
Debt Issuance Costs Reclassification [Member] | Long Term Debt Noncurrent [Member]  
Quantifying Misstatement in Current Year Financial Statements, Amount 1.6
Debt Issuance Costs Reclassification [Member] | Other Noncurrent Assets [Member]  
Quantifying Misstatement in Current Year Financial Statements, Amount 1.6
Restructuring Costs Mistatements [Member] | Income Before Tax [Member]  
Quantifying Misstatement in Current Year Financial Statements, Amount 0.1
Restructuring Costs Mistatements [Member] | Restructuring Charge [Member]  
Quantifying Misstatement in Current Year Financial Statements, Amount 0.1
Restructuring Costs Mistatements [Member] | Restructuring Charges Current [Member]  
Quantifying Misstatement in Current Year Financial Statements, Amount 1.0
Restructuring Costs Mistatements [Member] | Restructuring Charges NonCurrent [Member]  
Quantifying Misstatement in Current Year Financial Statements, Amount 3.9
General Presentation And Consistency In Financials [Member] | Other Accrued Liabilities Current [Member]  
Quantifying Misstatement in Current Year Financial Statements, Amount 3.3
General Presentation And Consistency In Financials [Member] | Warrant Liability [Member]  
Quantifying Misstatement in Current Year Financial Statements, Amount 3.3
Ommission Of Deferred Tax Asset [Member] | Income Before Tax [Member]  
Quantifying Misstatement in Current Year Financial Statements, Amount 0.2
Ommission Of Deferred Tax Asset [Member] | Other Noncurrent Assets [Member]  
Quantifying Misstatement in Current Year Financial Statements, Amount 0.5
Ommission Of Deferred Tax Asset [Member] | Accumulated Deficit [Member]  
Quantifying Misstatement in Current Year Financial Statements, Amount 0.7
Deferred Tax Liability Misstatement [Member] | Other Accrued Liabilities Current [Member]  
Quantifying Misstatement in Current Year Financial Statements, Amount 0.6
Deferred Tax Liability Misstatement [Member] | Accumulated Other Comprehensive Income  
Quantifying Misstatement in Current Year Financial Statements, Amount 0.1
Deferred Tax Liability Misstatement [Member] | Other Noncurrent Liabilities [Member]  
Quantifying Misstatement in Current Year Financial Statements, Amount 0.5
Ommission Of Reserve For Foreign Taxes [Member] | Income Before Tax [Member]  
Quantifying Misstatement in Current Year Financial Statements, Amount 0.3
Ommission Of Reserve For Foreign Taxes [Member] | Accumulated Deficit [Member]  
Quantifying Misstatement in Current Year Financial Statements, Amount 3.8
Ommission Of Reserve For Foreign Taxes [Member] | Other Noncurrent Liabilities [Member]  
Quantifying Misstatement in Current Year Financial Statements, Amount 4.2
Operating Losses Misstatement [Member] | Income Before Tax [Member]  
Quantifying Misstatement in Current Year Financial Statements, Amount 0.1
Operating Losses Misstatement [Member] | Accumulated Deficit [Member]  
Quantifying Misstatement in Current Year Financial Statements, Amount 0.3
Operating Losses Misstatement [Member] | Other Noncurrent Liabilities [Member]  
Quantifying Misstatement in Current Year Financial Statements, Amount 0.3
Tax Accounting Misstatement [Member] | Income Before Tax [Member]  
Quantifying Misstatement in Current Year Financial Statements, Amount 0.1
Tax Accounting Misstatement [Member] | Other Accrued Liabilities Current [Member]  
Quantifying Misstatement in Current Year Financial Statements, Amount 0.1
Tax Accounting Misstatement [Member] | Accumulated Deficit [Member]  
Quantifying Misstatement in Current Year Financial Statements, Amount 0.9
Tax Accounting Misstatement [Member] | Other Noncurrent Liabilities [Member]  
Quantifying Misstatement in Current Year Financial Statements, Amount 0.7
Other Misstatement [Member] | Income Before Tax [Member]  
Quantifying Misstatement in Current Year Financial Statements, Amount 0.1
Other Misstatement [Member] | General and Administrative Expense [Member]  
Quantifying Misstatement in Current Year Financial Statements, Amount 0.1
Other Misstatement [Member] | Interest Expense [Member]  
Quantifying Misstatement in Current Year Financial Statements, Amount 0.1
Other Misstatement [Member] | Other Accrued Liabilities Current [Member]  
Quantifying Misstatement in Current Year Financial Statements, Amount 0.9
Other Misstatement [Member] | Other Noncurrent Assets [Member]  
Quantifying Misstatement in Current Year Financial Statements, Amount 0.7
Other Misstatement [Member] | Accumulated Other Comprehensive Income  
Quantifying Misstatement in Current Year Financial Statements, Amount 4.8
Other Misstatement [Member] | Property And Equipment [Member]  
Quantifying Misstatement in Current Year Financial Statements, Amount $ 0.3