Acquisitions and FDIC Indemnification Asset (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016	Dec. 31, 2016	Dec. 31, 2015
Business Acquisition [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount, Covered			$ 4,881	$ 5,602
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Accretion	$ 0	$ 0
Loans and Leases Receivable, Disposals	(2,872)	(99)
Total Covered Assets	2,009	5,503
Consumer Loan [Member]
Business Acquisition [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount, Covered			1,430	1,480
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Accretion	0	0
Loans and Leases Receivable, Disposals	(1,430)	(13)
Total Covered Assets	0	1,467
Commercial Loan [Member]
Business Acquisition [Line Items]
Loans and Leases Receivable, Gross, Carrying Amount, Covered			$ 3,451	$ 4,122
Certain Loans Acquired in Transfer Not Accounted for as Debt Securities, Accretable Yield, Accretion	0	0
Loans and Leases Receivable, Disposals	(1,442)	(86)
Total Covered Assets	$ 2,009	$ 4,036