Schedule II - Valuation and Qualifying Accounts (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Allowance for Loan Losses
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	$ 49,804	$ 19,443	$ 9,288
Charged to Cost and Expenses	74,863	67,432	26,570
Charged to Other Accounts	7,129	2,567	1,236
Deductions— Write offs	(78,485)	(39,638)	(17,651)
Balance at End of Period	53,311	49,804	19,443
Deferred tax asset valuation allowance
Movement in Valuation Allowances and Reserves [Roll Forward]
Balance at Beginning of Period	26,090	26,199	17,266
Charged to Cost and Expenses	(2,514)	(5,826)	0
Charged to Other Accounts	8,402	5,717	8,933
Deductions— Write offs	0	0	0
Balance at End of Period	$ 31,978	$ 26,090	$ 26,199