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Accounts Payable And Accrued Expenses (Schedule Of Accounts Payable And Accrued Expenses) (Details) (USD $) In Thousands, unless otherwise specified | Mar. 31, 2013 | Mar. 31, 2012
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Accounts Payable And Accrued Expenses [Abstract] |  |
Accounts payable | $ 7,146 | $ 8,191
Accrued investories in-transit | 779 | 3,330
Accrued miscellaneous expenses | 9,172 | 9,595
Accrued outside services | 2,251 | 113
Accrued subcontractor program costs | 2,442 | 1,885
Accrued compensation | 5,506 | 8,380
Income taxes payable | 133 | 192
Accrued warranty | 2,709 | 5,896
Total | $ 30,138 | $ 37,582

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