Income Taxes - Income Tax Expense (Benefit) from Continuing Operations, Less Noncontrolling Interest (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Current:
Federal	$ 18,094	$ 10,195	$ 11,962
State	3,232	1,916	1,546
Total Current	21,326	12,111	13,508
Deferred:
Federal	1,389	2,187	1,448
State	133	215	903
Total Deferred	1,522	2,402	2,351
Total Income Tax Expense (Benefit)	$ 22,848	$ 14,513	$ 15,859