Discontinued Operations - Schedule of the Components of Discontinued Operations (Detail) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended												12 Months Ended
	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Sep. 30, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total revenues	$ 26,837	$ 18,853	$ 6,017	$ 1,456	$ 6,517	$ 6,944	$ 6,763	$ 14,716	$ 21,975	$ 25,642	$ 32,553	$ 36,991
General and administrative expenses													11,505	10,369	8,982
Loss from discontinued operations														(2,138)	(890)
Loss on sale of discontinued operations														(271)
Loss from discontinued operations per share of common stock:
Basic														$ (1.03)	$ (0.39)
Diluted														$ (1.03)	$ (0.39)
Discontinued Operations [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Servicing fees														9,686	8,497
Management fees from affiliates														6,312	6,618
Total revenues														15,998	15,115
General and administrative expenses														12,938	14,884
Income from discontinued operations before income taxes														3,060	231
Income tax provision														(5,198)	(1,121)
Loss from discontinued operations														(2,138)	(890)
Loss on sale of discontinued operations														$ (271)
Loss from discontinued operations per share of common stock:
Basic														$ (1.03)	$ (0.39)
Diluted														$ (1.03)	$ (0.39)