Allowance for Loan Losses - Modified Loan Accounts for TDR (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Receivables [Abstract]
Modified Loans	$ 116,419	$ 49,975	$ 270,266	$ 189,066
Charge-offs	5,925	3,456	16,357	5,845
Payment-Default	$ 23,326	$ 16,719	$ 70,401	$ 29,895