Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands		Total	Cumulative effect adjustment	[1]	Common Stock	Additional Paid-in Capital	Retained Earnings	Retained Earnings Cumulative effect adjustment	[1]	Treasury Stock	Accumulated Other Comprehensive Income (Loss)
Beginning balance at Dec. 31, 2018		$ 357,067			$ 12,463	$ 187,813	$ 168,951			$ (6,499)	$ (5,661)
Net income		7,285					7,285
Other comprehensive income, net of tax		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)
Ending balance at Mar. 31, 2019		363,849			12,463	187,535	173,771			(7,297)	(2,623)
Beginning balance at Dec. 31, 2018		357,067			12,463	187,813	168,951			(6,499)	(5,661)
Net income		17,959
Other comprehensive income, net of tax		7,284
Ending balance at Jun. 30, 2019		488,351			16,581	296,879	181,984			(8,716)	1,623
Beginning balance at Mar. 31, 2019		363,849			12,463	187,535	173,771			(7,297)	(2,623)
Issuance of common stock due to business combination		113,346			4,118	109,228
Net income		10,674					10,674
Other comprehensive income, net of tax		4,246									4,246
Release/lapse of restriction on RSUs		(19)				(196)				177
Repurchase of common stock		(1,596)								(1,596)
Share-based compensation		312				312
Dividends paid on common stock		(2,461)					(2,461)
Ending balance at Jun. 30, 2019		488,351			16,581	296,879	181,984			(8,716)	1,623
Beginning balance at Dec. 31, 2019		508,982	$ (5,362)		16,581	297,390	201,105	$ (5,362)		(10,466)	4,372
Net income		(1,975)					(1,975)
Other comprehensive income, net of tax		2,505									2,505
Acquisition fair value finalization	[2]	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)
Ending balance at Mar. 31, 2020		500,564			16,581	299,412	190,212			(12,518)	6,877
Beginning balance at Dec. 31, 2019		508,982	$ (5,362)		16,581	297,390	201,105	$ (5,362)		(10,466)	4,372
Net income		9,737
Other comprehensive income, net of tax		14,176
Ending balance at Jun. 30, 2020		520,781			16,581	299,542	198,382			(12,272)	18,548
Beginning balance at Mar. 31, 2020		500,564			16,581	299,412	190,212			(12,518)	6,877
Net income		11,712					11,712
Other comprehensive income, net of tax		11,671									11,671
Release/lapse of restriction on RSUs		(12)				(258)				246
Share-based compensation		388				388
Dividends paid on common stock		(3,542)					(3,542)
Ending balance at Jun. 30, 2020		$ 520,781			$ 16,581	$ 299,542	$ 198,382			$ (12,272)	$ 18,548

[1] Reclassification pursuant to adoption of ASU 2016-13, Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. See Note 2. Effect of New Financial Accounting Standards for additional information.

[2] 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 6. Goodwill and Intangible Assets for additional information.