(3) Income Taxes (in thousands) (Detail) - Expected Income Tax (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Expected amount	$ 12,064	$ 19,859
State income taxes, net of federal benefit	1,723	2,950
Other	(3,119)	(1,878)
	$ 10,668	$ 20,931