Income Taxes - Additional Information (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Effective tax rate from continuing operations	47.00%	42.60%	49.00%	77.60%
Annual limitation net operating loss	$ 1,700		$ 1,700
Net deferred tax assets	108,692		108,692		$ 106,538
Unrecognized tax benefits	$ 167		$ 167		$ 167