Taxes on Income - Additional Information (Detail) (USD $)	3 Months Ended
	Mar. 31, 2014	Dec. 31, 2013
Income Tax Examination [Line Items]
Income tax benefit	$ 6,700,000
Unrecognized tax benefits	0
Income tax examination	Federal and state tax returns for the 2010 through 2013 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 liabilities		1,800,000
Deferred tax asset, valuation allowance	4,900,000
Income tax benefit	6,700,000
SASCO [Member] | Eliminated [Member]
Income Tax Examination [Line Items]
Deferred tax liabilities	$ 1,800,000