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Lines of Credit and Other Borrowings - Additional Information (Detail) (USD $)
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3 Months Ended | 3 Months Ended | 1 Months Ended | 1 Months Ended | 0 Months Ended | 1 Months Ended | |||||||
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Mar. 31, 2014
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Mar. 31, 2013
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Mar. 04, 2014
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Dec. 31, 2013
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Mar. 31, 2014
Line of Credit
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Mar. 31, 2013
Line of Credit
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May 07, 2013
Prime Rate
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Mar. 31, 2014
Domestic Revolver Credit Facility
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May 07, 2013
Domestic Revolver Credit Facility
Prime Rate
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Mar. 31, 2014
Ex-Im Revolver
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May 07, 2013
Ex-Im Revolver
Prime Rate
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Apr. 10, 2014
Subsequent Event
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May 05, 2014
Subsequent Event
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| Line Of Credit Facility [Line Items] | |||||||||||||
| Credit agreements amendment fee | $ 10,000 | ||||||||||||
| Revolving lines of credit fee paid | 10,000 | 10,000 | 10,000 | ||||||||||
| Line of credit maximum borrowing capacity | 5,000,000 | 4,000,000 | |||||||||||
| Outstanding borrowings under lines of credit | 2,900,000 | 800,000 | 2,100,000 | ||||||||||
| Line of credit facility, expiration date | May 01, 2014 | Jun. 01, 2014 | |||||||||||
| Interest on principal balance rate plus | 2.00% | 1.50% | |||||||||||
| Prime floor, daily prime plus LIBOR | 2.50% | ||||||||||||
| Unused capacity commitment fee percentage | 0.25% | ||||||||||||
| Interest expense incurred for lines of credit and loan and security agreement | 229,000 | 84,000 | |||||||||||
| Accrued interest payable | 12,000 | 20,000 | |||||||||||
| Amortization of discount on lines of credit | 120,000 | 18,000 | |||||||||||
| Amortization of deferred debt issuance costs | 57,000 | 38,000 | |||||||||||
| Restricted cash amounts | 0 | 0 | |||||||||||
| Commitment fees and legal costs incurred | 10,000 | 0 | |||||||||||
| Financed insurance premium | 123,000 | ||||||||||||
| Number of monthly insurance premium installments payable in 2013 | Nine | ||||||||||||
| Financial insurance premiums interest rate | 2.85% | ||||||||||||
| Interest expense incurred for financed insurance premiums | $ 1,000 | $ 2,000 | |||||||||||