Annual report pursuant to Section 13 and 15(d)

BALANCE SHEET INFORMATION - Schedule Of Condensed Balance Sheet (Details)

v3.19.2
BALANCE SHEET INFORMATION - Schedule Of Condensed Balance Sheet (Details) - USD ($)
$ in Thousands
Mar. 31, 2019
Dec. 31, 2018
Sep. 30, 2018
Jun. 30, 2018
Mar. 31, 2018
Dec. 31, 2017
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Manufacturing inventories [Abstract]                  
Total finished goods $ 11,505       $ 22,085        
Work in progress 107       778        
Raw materials 6,828       11,565        
Total manufacturing inventories 18,440 $ 15,563 $ 21,084 $ 30,666 34,428 $ 35,461 $ 34,712 $ 36,686 $ 36,274
Service inventories:                  
Finished goods 13,437       14,863        
Component parts 5,633       7,026        
Total service inventories 19,070 18,551 18,642 19,397 21,889 19,061 19,915 19,788 19,849
Other current assets:                  
Insurance receivable 8,950                
Prepayments 3,856       4,331        
Income tax receivable 1,927       582        
Other 3,362       8,652        
Total other current assets 18,095 7,877 11,291 11,348 13,565 8,335 9,581 9,760 9,183
Property, plant and equipment:                  
Property and equipment, gross 39,369       42,795        
Less: accumulated depreciation and amortization (30,932)       (33,097)        
Property and equipment, net 8,437 8,773 8,925 9,361 9,698 10,226 10,420 10,137 10,876
Other current liabilities:                  
Accrued expenses 8,925       7,619        
Asset retirement obligation 1,936       2,176        
Accrued settlement 10,452       101        
Accrued warranty 3,456       2,422        
Other accrued liabilities 4,256       5,320        
Total other current liabilities 29,025 $ 25,295 $ 29,150 $ 23,114 17,638 $ 19,024 $ 16,561 $ 17,344 $ 15,945
Manufactured Finished Goods [Member]                  
Manufacturing inventories [Abstract]                  
Total finished goods 8,160       11,215        
Distributor Inventory [Member]                  
Manufacturing inventories [Abstract]                  
Total finished goods 3,345       10,870        
Machinery and Equipment [Member]                  
Property, plant and equipment:                  
Property and equipment, gross 30,306       34,090        
Furniture and Fixtures [Member]                  
Property, plant and equipment:                  
Property and equipment, gross 2,073       1,942        
Leasehold Improvements [Member]                  
Property, plant and equipment:                  
Property and equipment, gross $ 6,990       $ 6,763