Guarantees and Indemnifications Guarantees (Details) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Guarantees [Abstract]
Total of Loans Covered by Guarantees	$ 27,647	$ 12,187
Total of Guaranteed Loans Inquired About	940	1,300
Total Loans Indemnified to third parties	1,604	2,200
Loan Repurchase Guarantee Liability	$ 905	$ 1,175