Components of Income Tax Expense (Benefit) (Detail) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Current
Federal	$ 551	$ 0	$ 0
State	(21)	811	540
Foreign	220	262	416
Total	750	1,073	956
Deferred
Federal	(1,819)	(1,320)	37,822
State	8	68	5,134
Foreign	267	395	299
Total	(1,544)	(857)	43,255
Total income tax (benefit) expense for continuing operations	(794)	216	44,211
Discontinued operations	0	0	2,122
Income tax expense (benefit), continuing operations, discontinued operations, total	$ (794)	$ 216	$ 46,333