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Investment in Limited Partnerships - Additional Information (Detail) (USD $)
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12 Months Ended | |
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Dec. 31, 2013
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Dec. 31, 2012
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| Schedule of Equity Method Investments [Line Items] | ||
| Consolidated VIE limited partnership interest | 99.90% | |
| Total assets recorded due to consolidation | $ 53,000 | $ 70,000 |
| Net Income | 26,000 | 70,000 |
| Maximum exposure to future loss related to limited partnerships recorded investment | 800,000 | 800,000 |
| Remaining cash commitments | 0 | |
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Maximum [Member]
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| Schedule of Equity Method Investments [Line Items] | ||
| Loss attributable to noncotrolling interest | $ 1,000 | $ 1,000 |