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Debt - Additional Information (Detail) (USD $)
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12 Months Ended | 1 Months Ended | 12 Months Ended | 1 Months Ended | 3 Months Ended | 12 Months Ended | ||||
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Dec. 31, 2013
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Dec. 31, 2012
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Dec. 31, 2011
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Mar. 31, 2014
Subsequent Event [Member]
New term note [Member]
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Dec. 31, 2013
Revolving credit facility [Member]
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Dec. 31, 2013
Secured borrowings [Member]
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Dec. 31, 2013
Junior subordinated notes [Member]
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Aug. 31, 2013
Debenture [Member]
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Mar. 31, 2013
Debenture [Member]
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Dec. 31, 2013
Debenture [Member]
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| Debt Instrument [Line Items] | ||||||||||
| Rate of cash premium | 10.00% | 10.00% | ||||||||
| Period of Line of Credit | 30 days | 90 days | ||||||||
| Interest Rate of LIBOR | 2.00% | 3.25% | ||||||||
| Debt instrument face amount | $ 109,397,000 | $ 30,000,000 | $ 8,500,000 | $ 6,000,000 | ||||||
| SBIC debenture interest rate | 3.64% | 2.35% | ||||||||
| Annual fees | 0.76% | 0.515% | ||||||||
| Debenture maturity period | 10 years | |||||||||
| Repayment of Debentures | 4,200,000 | |||||||||
| Debenture's maturity date | Sep. 01, 2013 | |||||||||
| Revolving credit facility credit availability | 40,000,000 | |||||||||
| Spread under prime interest rate on revolving credit facility | 0.50% | |||||||||
| Debt instrument, maturity period | Jun. 30, 2015 | |||||||||
| Minimum net worth | 132,000,000 | |||||||||
| Percentage charged as unused fee | 0.375% | |||||||||
| Interest rate | 2.50% | |||||||||
| Decrease in credit availability | 25,000,000 | |||||||||
| Interest Paid | $ 3,500,000 | $ 3,495,000 | $ 3,733,000 | |||||||