Income Taxes (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Federal
Current	$ (485)	$ (5,570)	$ (5,539)
Deferred		19,174	(568)
State and local
Current	(597)	(635)	(1,193)
Deferred		9,971	(122)
Total income tax expense/(benefit) from continuing operations	(1,082)	22,940	(7,422)
Reconciliation of U.S. federal statutory income tax rate to the effective income tax rate
Federal statutory tax rate (as a percent)	35.00%
Federal statutory rate - 35%	(9,663)	(9,452)	(6,710)
Increase in deferred tax asset valuation allowance	12,664	35,299
State and local income taxes, net of federal income taxes	(3,001)	(2,935)	(1,443)
Expiration of statute of limitations	(608)
Provision to return adjustments	(486)	(274)	530
Change in estimated state tax rates			(181)
Uncertain tax positions		281	96
Other	12	21	286
Total income tax expense/(benefit) from continuing operations	(1,082)	22,940	(7,422)
Deferred tax assets, net
Net operating loss carryforwards ("NOLs")	72,996	22,089
Compensation	5,007	12,061
Accrued liabilities	1,143	2,230
Investments	(4,050)	(3,782)
Uncertain tax positions	831	831
Fixed assets		(337)
Intangible assets		(823)
Deferred revenues		92
Other	417	1,323
Total net deferred tax asset before valuation allowance	76,344	33,684
Less: valuation allowance	$ (76,344)	$ (33,284)