Non Purchased Loans - (Details 3) - Non purchased loans and leases - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Investment and interest income recognized on impaired loans
Average Recorded Investment	$ 25,726	$ 29,233	$ 26,148	$ 29,791
Interest Income Recognized	273	238	397	417
Commercial, financial, agricultural
Investment and interest income recognized on impaired loans
Average Recorded Investment	1,873	1,232	2,187	1,265
Interest Income Recognized	0	21	0	23
Real estate – construction
Investment and interest income recognized on impaired loans
Average Recorded Investment	295	117	268	58
Interest Income Recognized	6	2	6	2
Real estate – 1-4 family mortgage
Investment and interest income recognized on impaired loans
Average Recorded Investment	8,911	16,157	8,892	16,415
Interest Income Recognized	89	123	110	195
Real estate – commercial mortgage
Investment and interest income recognized on impaired loans
Average Recorded Investment	14,487	11,660	14,635	11,986
Interest Income Recognized	176	91	279	196
Installment loans to individuals
Investment and interest income recognized on impaired loans
Average Recorded Investment	160	67	166	67
Interest Income Recognized	$ 2	$ 1	$ 2	$ 1