Non Purchased Loans - Changes in Restructured Loans (Details) - Non purchased loans and leases $ in Thousands	3 Months Ended
	Mar. 31, 2018 USD ($) loan
Changes in restructured loans [Roll Forward]
Totals at January 1, 2018 (loans) | loan	54
Additional loans with concessions (loans) | loan	4
Reclassified as nonperforming (loans) | loan	(3)
Paid in full (loans) | loan	(2)
Principal paydowns (loans) | loan	0
Totals at March 30, 2018 (loans) | loan	53
Recorded Investment
Totals at January 1, 2018 | $	$ 5,588
Additional loans with concessions | $	657
Reclassified as nonperforming | $	(192)
Paid in full | $	(773)
Principal paydowns | $	(64)
Totals at March 31, 2018 | $	$ 5,216