Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands		Total	Common Stock	Additional Paid-in Capital	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Income (Loss)
Balance at Dec. 31, 2018		$ 357,067	$ 12,463	$ 187,813	$ 168,951	$ (6,499)	$ (5,661)
Net (loss) income		7,285			7,285
Other comprehensive income		3,038					3,038
Release/lapse of restriction on RSUs		(69)		(570)		501
Repurchase of common stock		(1,299)				(1,299)
Share-based compensation		292		292
Dividends paid on common stock		(2,465)			(2,465)
Balance at Mar. 31, 2019		363,849	12,463	187,535	173,771	(7,297)	(2,623)
Balance at Dec. 31, 2019		508,982	16,581	297,390	201,105	(10,466)	4,372
Net (loss) income		(1,975)			(1,975)
Other comprehensive income		2,505					2,505
Acquisition fair value finalization	[1]	2,355		2,355
Release/lapse of restriction on RSUs		(127)		(679)		552
Repurchase of common stock		(2,604)				(2,604)
Share-based compensation		346		346
Dividends paid on common stock		(3,556)			(3,556)
Balance at Mar. 31, 2020		$ 500,564	$ 16,581	$ 299,412	$ 190,212	$ (12,518)	$ 6,877

[1] Relates to the finalization of the purchase accounting adjustments for the ATBancorp acquisition. This purchase accounting adjustment had a $2.06 million impact on goodwill, $296 thousand impact on deferred income taxes, with the offsetting impact being to additional paid-in capital. See Note 7. Goodwill and Other Intangible Assets for additional information.