Income Taxes - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Jan. 27, 2014	Dec. 31, 2013
Income Tax Examination [Line Items]
Unrecognized tax benefits	$ 0
Income tax examination	Federal and state tax returns for the 2011 through 2014 tax years are subject to examination
Income tax examination in process	No state income tax return examinations are currently in process.
SASCO [Member]
Income Tax Examination [Line Items]
Deferred tax asset				4,900,000
Deferred tax asset valuation allowance			4,900,000
Deferred tax liabilities				1,800,000
Income tax benefit		6,700,000
SASCO [Member] | Eliminated [Member]
Income Tax Examination [Line Items]
Deferred tax liabilities			$ 1,800,000