Quarterly report pursuant to Section 13 or 15(d)

Intangible Assets (Details)

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Intangible Assets (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Jun. 30, 2015
Jun. 30, 2014
Mar. 31, 2015
Intangible Assets      
Intangible Assets, Gross $ 8,196   $ 8,196
Accumulated Amortization 6,928   6,859
Total expected future amortization 1,268   1,337
Amortization expense 100 $ 100  
Expected future amortization expense of intangible assets      
2016 (remainder of fiscal year) 263    
2017 352    
2018 242    
2019 224    
2020 187    
Total expected future amortization $ 1,268   $ 1,337
Manufacturing license      
Intangible Assets      
Weighted Average Amortization Period 17 years   17 years
Intangible Assets, Gross $ 3,700   $ 3,700
Accumulated Amortization 3,598   3,585
Total expected future amortization 102   115
Expected future amortization expense of intangible assets      
Total expected future amortization $ 102   $ 115
Technology      
Intangible Assets      
Weighted Average Amortization Period 10 years   10 years
Intangible Assets, Gross $ 2,240   $ 2,240
Accumulated Amortization 1,213   1,157
Total expected future amortization 1,027   1,083
Expected future amortization expense of intangible assets      
Total expected future amortization $ 1,027   $ 1,083
Parts and service customer relationships      
Intangible Assets      
Weighted Average Amortization Period 5 years   5 years
Intangible Assets, Gross $ 1,080   $ 1,080
Accumulated Amortization $ 1,080   $ 1,080
TA100 customer relationships      
Intangible Assets      
Weighted Average Amortization Period 2 years   2 years
Intangible Assets, Gross $ 617   $ 617
Accumulated Amortization 617   617
Backlog      
Intangible Assets      
Intangible Assets, Gross 490   490
Accumulated Amortization 351   351
Total expected future amortization 139   139
Expected future amortization expense of intangible assets      
Total expected future amortization $ 139   $ 139
Trade name      
Intangible Assets      
Weighted Average Amortization Period 1 year 2 months 12 days   1 year 2 months 12 days
Intangible Assets, Gross $ 69   $ 69
Accumulated Amortization $ 69   $ 69