Investment in Limited Partnerships - Additional Information (Detail) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
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
Maximum [Member]
Schedule of Equity Method Investments [Line Items]
Loss attributable to noncotrolling interest	$ 1,000	$ 1,000