Income Taxes - Income Tax Expense (Benefit) from Continuing Operations, Less Noncontrolling Interest (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Current:
Federal	$ 892	$ 12,798	$ 12,563
State	3,382	2,621	2,371
Total Current	4,274	15,419	14,934
Deferred:
Federal	15,383	(6,273)	6,223
State	2,742	1,798	1,019
Total Deferred	18,125	(4,475)	7,242
Total income tax expense	$ 22,399	$ 10,944	$ 22,176