Annual report pursuant to Section 13 and 15(d)

Intangible Assets (Details)

v2.4.0.8
Intangible Assets (Details) (USD $)
 12 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Mar. 31, 2012
Intangible Assets      
Intangible Assets, Gross $ 8,196,000 $ 8,196,000  
Accumulated Amortization 6,406,000 5,883,000  
Total expected future amortization 1,790,000 2,313,000  
Amortization expense 500,000 500,000 800,000
Expected future amortization expense of intangible assets      
2015 512,000    
2016 352,000    
2017 273,000    
2018 242,000    
2019 224,000    
Thereafter 187,000    
Total expected future amortization 1,790,000 2,313,000  
Manufacturing license
      
Intangible Assets      
Weighted Average Amortization Period 17 years 17 years  
Intangible Assets, Gross 3,700,000 3,700,000  
Accumulated Amortization 3,536,000 3,487,000  
Total expected future amortization 164,000 213,000  
Expected future amortization expense of intangible assets      
Total expected future amortization 164,000 213,000  
Technology
      
Intangible Assets      
Weighted Average Amortization Period 10 years 10 years  
Intangible Assets, Gross 2,240,000 2,240,000  
Accumulated Amortization 933,000 709,000  
Total expected future amortization 1,307,000 1,531,000  
Expected future amortization expense of intangible assets      
Total expected future amortization 1,307,000 1,531,000  
Parts and service customer relationships
      
Intangible Assets      
Weighted Average Amortization Period 5 years 5 years  
Intangible Assets, Gross 1,080,000 1,080,000  
Accumulated Amortization 900,000 684,000  
Total expected future amortization 180,000 396,000  
Expected future amortization expense of intangible assets      
Total expected future amortization 180,000 396,000  
TA100 customer relationships
      
Intangible Assets      
Weighted Average Amortization Period 2 years 2 years  
Intangible Assets, Gross 617,000 617,000  
Accumulated Amortization 617,000 617,000  
Backlog
      
Intangible Assets      
Intangible Assets, Gross 490,000 490,000  
Accumulated Amortization 351,000 317,000  
Total expected future amortization 139,000 173,000  
Expected future amortization expense of intangible assets      
Total expected future amortization 139,000 173,000  
Trade name
      
Intangible Assets      
Weighted Average Amortization Period 1 year 2 months 12 days 1 year 2 months 12 days  
Intangible Assets, Gross 69,000 69,000  
Accumulated Amortization $ 69,000 $ 69,000