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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, 2012
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Sep. 30, 2011
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Sep. 30, 2012
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Sep. 30, 2011
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Mar. 31, 2012
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Sep. 30, 2012
Manufacturing license
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Mar. 31, 2012
Manufacturing license
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Sep. 30, 2012
Technology
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Mar. 31, 2012
Technology
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Sep. 30, 2012
Parts and service customer relationships
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Mar. 31, 2012
Parts and service customer relationships
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Sep. 30, 2012
TA100 customer relationships
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Mar. 31, 2012
TA100 customer relationships
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Sep. 30, 2012
Backlog
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Mar. 31, 2012
Backlog
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Sep. 30, 2012
Trade name
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Mar. 31, 2012
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 | 5,639,000 | 5,639,000 | 5,385,000 | 3,463,000 | 3,437,000 | 597,000 | 485,000 | 576,000 | 468,000 | 617,000 | 617,000 | 317,000 | 309,000 | 69,000 | 69,000 | ||
| Intangible assets, net | 2,557,000 | 2,557,000 | 2,811,000 | 237,000 | 263,000 | 1,643,000 | 1,755,000 | 504,000 | 612,000 | 173,000 | 181,000 | ||||||
| Amortization expenses | 100,000 | 200,000 | 300,000 | 400,000 | |||||||||||||
| Expected future amortization expense of intangible assets | |||||||||||||||||
| 2013 (remainder of fiscal year) | 416,000 | 416,000 | |||||||||||||||
| 2014 | 489,000 | 489,000 | |||||||||||||||
| 2015 | 453,000 | 453,000 | |||||||||||||||
| 2016 | 273,000 | 273,000 | |||||||||||||||
| 2017 | 273,000 | 273,000 | |||||||||||||||
| Thereafter | 653,000 | 653,000 | |||||||||||||||
| Intangible assets, net | $ 2,557,000 | $ 2,557,000 | $ 2,811,000 | $ 237,000 | $ 263,000 | $ 1,643,000 | $ 1,755,000 | $ 504,000 | $ 612,000 | $ 173,000 | $ 181,000 | ||||||