Quarterly report pursuant to Section 13 or 15(d)

Intangible Assets (Details)

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Intangible Assets (Details) (USD $)
3 Months Ended 6 Months Ended 6 Months Ended 12 Months Ended 6 Months Ended 12 Months Ended 6 Months Ended 12 Months Ended 6 Months Ended 12 Months Ended 6 Months Ended 12 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Mar. 31, 2014
Sep. 30, 2014
Manufacturing license
Mar. 31, 2014
Manufacturing license
Sep. 30, 2014
Technology
Mar. 31, 2014
Technology
Sep. 30, 2014
Parts and service customer relationships
Mar. 31, 2014
Parts and service customer relationships
Sep. 30, 2014
TA100 customer relationships
Mar. 31, 2014
TA100 customer relationships
Sep. 30, 2014
Backlog
Mar. 31, 2014
Backlog
Sep. 30, 2014
Trade name
Mar. 31, 2014
Trade name
Intangible Assets                                  
Amortization expense $ 100,000 $ 200,000 $ 300,000 $ 300,000                          
Weighted Average Amortization Period           17 years 17 years 10 years 10 years 5 years 5 years 2 years 2 years     1 year 2 months 12 days 1 year 2 months 12 days
Intangible Assets, Gross 8,196,000   8,196,000   8,196,000 3,700,000 3,700,000 2,240,000 2,240,000 1,080,000 1,080,000 617,000 617,000 490,000 490,000 69,000 69,000
Accumulated Amortization 6,651,000   6,651,000   6,406,000 3,561,000 3,536,000 1,045,000 933,000 1,008,000 900,000 617,000 617,000 351,000 351,000 69,000 69,000
Total expected future amortization 1,545,000   1,545,000   1,790,000 139,000 164,000 1,195,000 1,307,000 72,000 180,000     139,000 139,000    
Expected future amortization expense of intangible assets                                  
2015 (remainder of fiscal year) 267,000   267,000                            
2016 352,000   352,000                            
2017 273,000   273,000                            
2018 242,000   242,000                            
2019 224,000   224,000                            
Thereafter 187,000   187,000                            
Total expected future amortization $ 1,545,000   $ 1,545,000   $ 1,790,000 $ 139,000 $ 164,000 $ 1,195,000 $ 1,307,000 $ 72,000 $ 180,000     $ 139,000 $ 139,000