Consolidated Statements of Changes in Shareholders' Equity (unaudited) - USD ($) $ in Thousands	Total	Additional Paid-In Capital	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Income (Loss)	Restricted Stock	Restricted Stock Treasury Stock	Performance Shares	Performance Shares Treasury Stock
Beginning balance at Dec. 31, 2018	$ 262,830	$ 97,602	$ 171,780	$ (2,556)	$ (3,996)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	9,473		9,473
Other comprehensive income (loss)	4,856				4,856
Restricted stock award grants	0	(1,055)		1,055
Performance based restricted stock award grants (8,351 shares)	592	592
Purchase of treasury stock	(201)			(201)
Cash dividends declared	(2,591)		(2,591)
Ending balance at Mar. 31, 2019	274,959	97,139	178,662	(1,702)	860
Beginning balance at Dec. 31, 2019	304,966	99,335	201,503	(2,811)	6,939
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	8,813		8,813
Other comprehensive income (loss)	10,063				10,063
Performance based restricted stock award grants	0	(217)		217
Restricted stock award grants	0	(892)		892
Performance based restricted stock award grants (8,351 shares)	549	549
Issuance of common stock, net of issuance costs (115,790 shares)	3,353	3,353
Purchase of treasury stock						$ (211)	$ (211)	$ (113)	$ (113)
Cash dividends declared	(2,618)		(2,618)
Ending balance at Mar. 31, 2020	$ 324,802	$ 102,128	$ 207,698	$ (2,026)	$ 17,002