Non Purchased Loans - Changes in Restructured Loans (Details) - Non purchased loans and leases $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2018 USD ($) loan	Jun. 30, 2018 USD ($) loan
Changes in restructured loans [Roll Forward]
Totals at January 1, 2018 (loans) | loan		54
Additional loans with concessions (loans) | loan		5
Reclassified as performing (loans) | loan	2
Reclassified as nonperforming (loans) | loan		(5)
Paid in full (loans) | loan		(5)
Principal paydowns (loans) | loan		0
Totals at March 30, 2018 (loans) | loan	51	51
Recorded Investment
Totals at January 1, 2018 | $		$ 5,588
Additional loans with concessions | $		707
Reclassified as performing | $	$ 154
Reclassified as nonperforming | $		(370)
Paid in full | $		(1,268)
Principal paydowns | $		(126)
Totals at June 30, 2018 | $	$ 4,685	$ 4,685