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] 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, 2017		10,023,059				10,023,059
Balance beginning at Dec. 31, 2017	$ 150,271	$ 76,977	$ 87,826	$ (11,665)	$ (2,867)	$ 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
Stock Issued During Period, Shares, Acquisitions														3,253,060
Exercise of stock options (in shares)		2,631
Exercise of stock options	33	$ 33
Stock Issued During Period, Value, Acquisitions													$ 63,598	$ 63,598
Compensation expense relating to restricted stock (in shares)		10,634
Adjustments to Additional Paid in Capital, Share-based Compensation, Restricted Stock Unit or Restricted Stock Award, Requisite Service Period Recognition	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)
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)				(6,383)
Balance Beginning (in shares) at Mar. 31, 2018		10,041,152
Balance beginning at Mar. 31, 2018	148,584	$ 77,159	88,933	(11,665)	(5,843)				(5,843)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	2,738		2,738
Other comprehensive income, net of taxes	(540)				(540)
Dividend Reinvestment and Stock Purchase Plan (in shares)		5,023
Dividend Reinvestment and Stock Purchase Plan	98	$ 98
Stock Issued During Period, Shares, Acquisitions														3,253,060
Stock Issued During Period, Value, Acquisitions													$ 63,598	$ 63,598
Compensation expense relating to restricted stock (in shares)		0
Adjustments to Additional Paid in Capital, Share-based Compensation, Restricted Stock Unit or Restricted Stock Award, Requisite Service Period Recognition	15	$ 15
Common stock dividends, $0.32 per share	(2,127)		(2,127)
Cumulative effect of changes in accounting principles | Accounting Standards Update 2014-09 [Member]										$ 0
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)				(6,383)
Balance Beginning (in shares) at Dec. 31, 2018		13,295,276
Balance beginning at Dec. 31, 2018	218,985	$ 141,170	94,547	(12,013)	(4,719)				(4,719)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	9,355		9,355
Other comprehensive income, net of taxes	4,666				4,666
Dividend Reinvestment and Stock Purchase Plan (in shares)		12,859
Dividend Reinvestment and Stock Purchase Plan	218	$ 218
Treasury Stock, Shares, Acquired		(342,085)
Treasury Stock, Value, Acquired, Cost Method	(5,841)			(5,841)
Compensation expense relating to restricted stock (in shares)		12,504
Adjustments to Additional Paid in Capital, Share-based Compensation, Restricted Stock Unit or Restricted Stock Award, Requisite Service Period Recognition	91	$ 91
Common stock dividends, $0.32 per share	(4,502)		(4,502)
Balance Ending (in shares) at Jun. 30, 2019		12,978,554
Balance ending at Jun. 30, 2019	222,972	$ 141,479	99,400	(17,854)	(53)
Balance Beginning (in shares) at Mar. 31, 2019		13,314,148
Balance beginning at Mar. 31, 2019	224,018	$ 141,349	96,912	(12,013)	(2,230)				$ (2,230)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	4,728		4,728
Other comprehensive income, net of taxes	2,177				2,177
Dividend Reinvestment and Stock Purchase Plan (in shares)		6,491
Dividend Reinvestment and Stock Purchase Plan	109	$ 109
Treasury Stock, Shares, Acquired		(342,085)
Treasury Stock, Value, Acquired, Cost Method	(5,841)			(5,841)
Compensation expense relating to restricted stock (in shares)		0
Adjustments to Additional Paid in Capital, Share-based Compensation, Restricted Stock Unit or Restricted Stock Award, Requisite Service Period Recognition	21	$ 21
Common stock dividends, $0.32 per share	(2,240)		(2,240)
Balance Ending (in shares) at Jun. 30, 2019		12,978,554
Balance ending at Jun. 30, 2019	$ 222,972	$ 141,479	$ 99,400	$ (17,854)	$ (53)