Income Taxes - Reconciliation of Expected Tax Benefit with Income Tax Benefit Relating to Loss before Income Taxes (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Tax Disclosure [Abstract]
Tax rate applied to income (loss) before income taxes	$ 4,061	$ (249)	$ 2,333
Increase (decrease) resulting from the effects of:
Tax exempt interest on obligations of states and political subdivisions	(148)	(118)	(143)
State income taxes	(259)	(27)	(173)
Stock compensation	4	28	132
Expiration of capital loss carryforward	0	354	0
Other	38	53	281
Federal tax provision before valuation allowance	3,696	41	2,430
State tax provision before valuation allowance	740	76	494
Total income tax provision	4,436	117	2,924
Change in valuation allowance	(44,821)	(117)	(2,924)
Income tax provision (benefit)	$ (40,385)	$ 0	$ 0