Income Taxes - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Effective tax rate from continuing operations	40.70%	39.20%
Net unrealized built in loss, recognition period	5 years
Annual limitation net operating loss	$ 1,700,000
Net deferred tax assets	107,943,000		106,538,000
Unrecognized tax benefits	$ 167,000		$ 167,000