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Intangible Assets (Details) (USD $)
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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 | |||||
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Sep. 30, 2013
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Sep. 30, 2012
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Sep. 30, 2013
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Sep. 30, 2012
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Mar. 31, 2013
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Sep. 30, 2013
Manufacturing license
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Mar. 31, 2013
Manufacturing license
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Sep. 30, 2013
Technology
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Mar. 31, 2013
Technology
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Sep. 30, 2013
Parts and service customer relationships
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Mar. 31, 2013
Parts and service customer relationships
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Sep. 30, 2013
TA100 customer relationships
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Mar. 31, 2013
TA100 customer relationships
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Sep. 30, 2013
Backlog
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Mar. 31, 2013
Backlog
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Sep. 30, 2013
Trade name
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Mar. 31, 2013
Trade name
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| Intangible Assets | |||||||||||||||||
| 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 | 6,153,000 | 6,153,000 | 5,883,000 | 3,511,000 | 3,487,000 | 821,000 | 709,000 | 792,000 | 684,000 | 617,000 | 617,000 | 343,000 | 317,000 | 69,000 | 69,000 | ||
| Intangible assets, net | 2,043,000 | 2,043,000 | 2,313,000 | 189,000 | 213,000 | 1,419,000 | 1,531,000 | 288,000 | 396,000 | 147,000 | 173,000 | ||||||
| Amortization expense | 200,000 | 100,000 | 300,000 | 300,000 | |||||||||||||
| Expected future amortization expense of intangible assets | |||||||||||||||||
| 2014 (remainder of fiscal year) | 311,000 | 311,000 | |||||||||||||||
| 2015 | 533,000 | 533,000 | |||||||||||||||
| 2016 | 273,000 | 273,000 | |||||||||||||||
| 2017 | 273,000 | 273,000 | |||||||||||||||
| 2018 | 242,000 | 242,000 | |||||||||||||||
| Thereafter | 411,000 | 411,000 | |||||||||||||||
| Intangible assets, net | $ 2,043,000 | $ 2,043,000 | $ 2,313,000 | $ 189,000 | $ 213,000 | $ 1,419,000 | $ 1,531,000 | $ 288,000 | $ 396,000 | $ 147,000 | $ 173,000 | ||||||