CONSOLIDATED CONDENSED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock [Member]	Retained Earnings [Member]	Treasury Shares [Member]	Accumulated Other Comprehensive Income [Member]	Calculated under Revenue Guidance in Effect before Topic 606 [Member]	Calculated under Revenue Guidance in Effect before Topic 606 [Member] Common Stock [Member]	Calculated under Revenue Guidance in Effect before Topic 606 [Member] Retained Earnings [Member]	Calculated under Revenue Guidance in Effect before Topic 606 [Member] Treasury Shares [Member]	Calculated under Revenue Guidance in Effect before Topic 606 [Member] Accumulated Other Comprehensive Income [Member]	Difference between Revenue Guidance in Effect before and after Topic 606 [Member]	Difference between Revenue Guidance in Effect before and after Topic 606 [Member] Retained Earnings [Member]	Difference between Revenue Guidance in Effect before and after Topic 606 [Member] Accumulated Other Comprehensive Income [Member]	Columbus First Bancorp, Inc. [Member]	Columbus First Bancorp, Inc. [Member] Common Stock [Member]
Balance Beginning (in shares) at Dec. 31, 2016		9,998,025
Balance beginning at Dec. 31, 2016	$ 142,944	$ 76,490	$ 80,736	$ (11,665)	$ (2,617)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	6,249		6,249
Other comprehensive income, net of taxes	1,642				1,642
Dividend Reinvestment and Stock Purchase Plan (in shares)		8,554
Dividend Reinvestment and Stock Purchase Plan	180	$ 180
Exercise of stock options (in shares)		3,398
Exercise of stock options	51	$ 51
Compensation expense relating to stock options	1	$ 1
Compensation expense relating to restricted stock (in shares)		4,027
Compensation expense relating to restricted stock	63	$ 63
Common stock dividends, $0.32 per share	(3,203)		(3,203)
Balance Ending (in shares) at Jun. 30, 2017		10,014,004
Balance ending at Jun. 30, 2017	147,927	$ 76,785	83,782	(11,665)	(975)
Balance Beginning (in shares) at Dec. 31, 2017		10,023,059					10,023,059
Balance beginning at Dec. 31, 2017	150,271	$ 76,977	87,826	(11,665)	(2,867)	$ 150,271	$ 76,977	$ 87,301	$ (11,665)	$ (2,342)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	5,451		5,451
Other comprehensive income, net of taxes	(3,516)				(3,516)
Dividend Reinvestment and Stock Purchase Plan (in shares)		9,851
Dividend Reinvestment and Stock Purchase Plan	191	$ 191
Exercise of stock options (in shares)		2,631
Exercise of stock options	33	$ 33
Compensation expense relating to restricted stock (in shares)		10,634
Compensation expense relating to restricted stock	71	$ 71
Common stock dividends, $0.32 per share	(3,733)		(3,733)
Cumulative effect of changes in accounting principles | Accounting Standards Update 2014-09 [Member]											$ (525)	$ 525	$ (525)
Stock issued for acquisition of Columbus First Bancorp, Inc. (in shares)															3,253,060
Stock issued for acquisition of Columbus First Bancorp, Inc.														$ 63,598	$ 63,598
Balance Ending (in shares) at Jun. 30, 2018		13,299,235
Balance ending at Jun. 30, 2018	$ 212,366	$ 140,870	$ 89,544	$ (11,665)	$ (6,383)