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Lines of Credit and Other Borrowings - Additional Information (Detail) (USD $)
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0 Months Ended | 1 Months Ended | 3 Months Ended | 6 Months Ended | 0 Months Ended | 0 Months Ended | |||||||||
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Jun. 03, 2014
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Apr. 10, 2014
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Mar. 04, 2014
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May 05, 2014
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Jun. 30, 2014
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Jun. 30, 2013
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Jun. 30, 2014
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Jun. 30, 2013
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Dec. 31, 2013
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Jun. 30, 2013
Prime Rate
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Jun. 30, 2014
Domestic Revolver Credit Facility
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Jun. 03, 2014
Domestic Revolver Credit Facility
Prime Rate
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Jun. 30, 2014
Ex-Im Revolver
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Jun. 03, 2014
Ex-Im Revolver
Prime Rate
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Jul. 28, 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 | 15,000 | 10,000 | 10,000 | 10,000 | 45,000 | ||||||||||
| Lines of credit maximum borrowing capacity | 4,000,000 | 5,000,000 | |||||||||||||
| Outstanding borrowings under lines of credit | 3,300,000 | 3,300,000 | 1,800,000 | 1,500,000 | |||||||||||
| Payments under lines of credit | 16,904,000 | 15,195,000 | 2,900,000 | ||||||||||||
| Line of credit facility, expiration date | Aug. 01, 2014 | May 01, 2014 | Jun. 01, 2014 | ||||||||||||
| Increase decrease in interest rate of lines of credit facility | 0.50% | ||||||||||||||
| Interest on principal balance rate plus | 2.50% | 2.00% | |||||||||||||
| 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 | 185,000 | 116,000 | 414,000 | 200,000 | |||||||||||
| Accrued interest payable | 15,000 | 15,000 | 20,000 | ||||||||||||
| Amortization of discount on lines of credit | 80,000 | 18,000 | 200,000 | 36,000 | |||||||||||
| Amortization of debt issuance costs | 71,000 | 43,000 | 128,000 | 81,000 | |||||||||||
| Restricted cash amounts | 0 | 0 | 0 | ||||||||||||
| Commitment fees and legal costs incurred | 35,000 | 34,000 | 45,000 | 34,000 | |||||||||||
| Financed insurance premium | 74,000 | 74,000 | |||||||||||||
| Number of monthly insurance premium installments payable | Nine | ||||||||||||||
| Financial insurance premiums interest rate | 2.85% | 2.85% | |||||||||||||
| Interest expense incurred for financed insurance premiums | $ 1,000 | $ 1,000 | $ 2,000 | $ 4,000 | |||||||||||