Fair Value Measurements Schedule of Fair Value Unobservable Input Reconciliation (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Abstract]
Balance at beginning of period	$ 51	$ 145
Total realized and unrealized gains (losses)
Included in net income	0	0
Included in other comprehensive income	0	(4)
Principal paydowns	(43)	(90)
Transfers in and (out) of Level 3	0	0
Balance at end of period	$ 8	$ 51