Allowance for Loan Losses - Modified Loan Accounts for TDR (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Receivables [Abstract]
Modified Loans	$ 92,782	$ 75,183	$ 153,848	$ 139,091
Charge-offs	5,464	1,740	10,432	2,388
Payment-Default	$ 21,388	$ 8,394	$ 47,089	$ 13,177