Income Taxes - Additional Information (Detail) (USD $)	1 Months Ended	12 Months Ended
	Sep. 17, 2012	Dec. 31, 2013
Tax Credit Carryforward [Line Items]
Payments to civil penalty	$ 3,700,000
Federal capital loss carry forwards		79,000
Operating loss carryforwards expiration year		2027
Operating loss carry forwards net		2,200,000
Capital loss carryforward term		5 years
Credit carryforward, expiration date		Dec. 31, 2017
Maryland State [Member]
Tax Credit Carryforward [Line Items]
Credit carry forwards, net		237,000
Pennsylvania [Member]
Tax Credit Carryforward [Line Items]
Credit carry forwards, net		$ 29,000
Maximum [Member]
Tax Credit Carryforward [Line Items]
Capital loss carryforwards expiration year		2017
Minimum [Member]
Tax Credit Carryforward [Line Items]
Capital loss carryforwards expiration year		2016