Discontinued Operations - Revenue and Components of Discontinued Operations (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Total (loss) income from discontinued operations, net of tax	$ (3,182)	$ 1,880
Tax Lien Business [Member] | Propel [Member] | Discontinued Operations, Disposed of by Sale [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenue	4,950	7,881
Salaries and employee benefits	(2,860)	(2,196)
Other operating expenses	(1,473)	(908)
General and administrative expenses	(1,551)	(1,415)
Depreciation and amortization	(127)	(213)
(Loss) income from discontinued operations, before income taxes	(1,061)	3,149
Loss on sale of discontinued operations, before income taxes	(3,000)	0
Total (loss) income on discontinued operations, before income taxes	(4,061)	3,149
Income tax benefit (provision)	879	(1,269)
Total (loss) income from discontinued operations, net of tax	$ (3,182)	$ 1,880