Income Taxes - Additional Information (Detail) (USD $)	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012	Dec. 31, 2012
Income Tax Disclosure [Abstract]
Effective tax rate from continuing operations	41.80%	44.80%	33.70%	42.80%
Net unrealized built in loss, recognition period			5 years
Annual limitation net operating loss			$ 1,700,000
Net deferred tax assets	105,383,000		105,383,000		102,908,000
Unrecognized tax benefits	$ 2,678,000		$ 2,678,000		$ 2,678,000