Deferred Court Costs, Net - Schedule of Deferred Court Costs (Detail) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Jun. 30, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Dec. 31, 2013
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Deferred court costs, not recovered, term prior to write off	5 years
Court costs advanced	$ 615,002		$ 546,271
Court costs recovered	(232,028)		(206,287)
Court costs reserve	(308,920)	$ (298,955)	(279,572)	$ (261,781)	$ (243,832)	$ (210,889)
Deferred court costs, net	$ 74,054		$ 60,412