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CONVERTIBLE SUBORDINATED DEBT AND LONG-TERM DEBT (Details Textual) (USD $)
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12 Months Ended | 12 Months Ended | 1 Months Ended | 1 Months Ended | 12 Months Ended | ||||||||||||
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Mar. 31, 2013
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Mar. 31, 2012
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Mar. 31, 2011
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Mar. 29, 2012
Wells Fargo Credit Agreement [Member]
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Mar. 31, 2012
Credit Suisse Credit Agreement [Member]
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Mar. 31, 2011
Credit Suisse Credit Agreement [Member]
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Mar. 31, 2008
Credit Suisse Credit Agreement [Member]
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Mar. 31, 2012
Revolving Credit Facility [Member]
Wells Fargo Credit Agreement [Member]
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Jan. 31, 2013
Revolving Credit Facility [Member]
Wells Fargo Credit Agreement [Member]
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Mar. 29, 2012
Revolving Credit Facility [Member]
Wells Fargo Credit Agreement [Member]
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Mar. 31, 2008
Revolving Credit Facility [Member]
Credit Suisse Credit Agreement [Member]
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Mar. 31, 2013
Letter Of Credit [Member]
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Oct. 31, 2012
4.50% Convertible Subordinated Debt [Member]
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Nov. 15, 2010
3.50% Convertible Subordinated Debt [Member]
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Jul. 30, 2010
4.375% Convertible Subordinated Debt [Member]
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Mar. 31, 2008
Senior Secured Term Loan [Member]
Credit Suisse Credit Agreement [Member]
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Mar. 31, 2011
Subordinated Term Loan [Member]
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| Long-term Debt, Gross | $ 60,000,000 | $ 135,000,000 | |||||||||||||||
| Debt Instrument, Increase, Additional Borrowings | 10,000,000 | ||||||||||||||||
| Debt Instrument, Convertible, Conversion Ratio | 607.1645 | ||||||||||||||||
| Debt Instrument, Face Amount | 1,000 | ||||||||||||||||
| Debt Instrument, Convertible, Conversion Price (in dolalrs per share) | $ 1.65 | $ 1.65 | $ 4.33 | ||||||||||||||
| Gains (Losses) on Extinguishment of Debt | 0 | 2,310,000 | 1,186,000 | ||||||||||||||
| Debt Instrument, Decrease, Repayments | 104,300,000 | 81,700,000 | 22,100,000 | 121,700,000 | |||||||||||||
| Cash paid during the year for Interest | 5,672,000 | 8,266,000 | 16,478,000 | 500,000 | 1,800,000 | ||||||||||||
| Line of Credit Facility, Maximum Borrowing Capacity | 55,000,000 | 75,000,000 | |||||||||||||||
| Line of Credit Facility, Unused Capacity, Commitment Fee Percentage | 0.375% | ||||||||||||||||
| Line of Credit Facility, Amount Outstanding | 49,500,000 | 1,100,000 | |||||||||||||||
| Capitalized Fees | 8,100,000 | 1,000,000 | 2,300,000 | 5,000,000 | |||||||||||||
| Line of Credit Facility, Covenant Terms | The fixed charge coverage ratio covenant is applicable only in fiscal quarters in which liquidity is below $16.5 million and decreased from 1.2 to 1.1 for the 12 month period ending on the last day of any fiscal quarter in which the covenant is applicable. The liquidity requirement to avoid triggering mandatory field audits decreased from $20 million to $18.5 million commencing January 31, 2013 and will remain at this level for the remaining term of the credit agreement. Both the fixed charge coverage ratio and liquidity are defined in the WF credit agreement and the January 31, 2013 amendment. In addition, compliance certificates must be filed monthly if borrowings exceed $15 million, otherwise they are to be filed quarterly. | ||||||||||||||||
| Line of Credit Facility, Remaining Borrowing Capacity | 53,900,000 | 50,000,000 | |||||||||||||||
| Proceeds From Issuance Of Other Long-Term Debt | $ 0 | $ 48,535,000 | $ 0 | $ 400,000,000 | |||||||||||||
| Debt Instrument, Interest Rate Terms | Interest accrued on the term loan at our option based on either, a prime rate plus a margin of 2.5%, or a LIBOR rate plus a margin of 3.5%. | ||||||||||||||||