Parent Company Only Condensed Financial Information - Condensed Statements of Operations (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011
Interest expense	$ 625	$ 833	$ 2,057	$ 2,676
Loss before income tax and undistributed subsidiaries' operations	1,909	435	3,332	4,066
Income tax (expense) benefit
Net loss	(1,909)	(435)	(3,332)	(4,066)
Parent Company [Member]
Interest expense	46	42	138	125
Other expense	139	138	274	540
Loss before income tax and undistributed subsidiaries' operations	(185)	(180)	(412)	(665)
Income tax (expense) benefit
Effect of subsidiaries' operations	(1,724)	(255)	(2,920)	(3,401)
Net loss	$ (1,909)	$ (435)	$ (3,332)	$ (4,066)