Other Real Estate Owned (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2017 USD ($)	Mar. 31, 2016 USD ($)	Mar. 31, 2017 USD ($) property	Sep. 30, 2016 property	Jun. 30, 2016 USD ($)	Mar. 31, 2016 USD ($) property
OREO
Balance at the beginning of the period	$ 18,316	$ 24,803
Acquired in Southeastern Bank acquisition	550
Additions, net	4,284	2,124
Write-downs	(936)	(667)
Sold	(2,207)	(4,529)
Balance at the end of the period	20,007	21,731
Number of properties uncovered | property				17		115
Carrying Value of uncovered OREO assets	18,316	24,803	$ 20,007		$ 4,200	$ 21,731
Covered OREO
Balance at the beginning of the period	0	5,751
Additions, net		2,151
Write-downs		(2,131)
Sold		(1,549)
Balance at the end of the period	0	4,222
Number of properties covered by loss share with the FDIC | property						17
Total
Balance at the beginning of the period	18,316	30,554
Acquired in Southeastern Bank acquisition	550
Additions, net	4,284	4,275
Write-downs	(936)	(2,798)
Sold	(2,207)	(6,078)
Balance at the end of the period	20,007	$ 25,953
Number of properties held | property			101			132
Residential real estate included in OREO	1,400
Residential real estate consumer mortgage loans in foreclosure process	$ 6,400