Consolidated Statements of Changes in Stockholders' Equity (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Cumulative Effect, Period of Adoption, Adjustment [Member] Common Stock [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member] Additional Paid-in Capital [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member] Retained Earnings [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member] AOCI Attributable to Parent [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member]	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	AOCI Attributable to Parent [Member]		Total
Balance (in shares) at Dec. 31, 2018						22,749
Balance at Dec. 31, 2018						$ 36,689	$ 36,797	$ 298,156	$ (5,142)		$ 366,500
Net income						0	0	15,641	0		15,641
Net change in accumulated other comprehensive income						0	0	0	2,629		2,629
Stock compensation expense						$ 0	863	0	0		863
Stock issued for share-based awards, net of witholdings to satisfy employee tax obligations (in shares)						74
Stock issued for share-based awards, net of witholdings to satisfy employee tax obligations						$ 245	2,254	(4,452)	0		(1,953)
Cash dividends declared						$ 0	0	(5,686)	0		(5,686)
Balance (in shares) at Mar. 31, 2019						22,823
Balance at Mar. 31, 2019						$ 36,934	39,914	303,659	(2,513)		377,994
Balance (in shares) at Dec. 31, 2019						22,604
Balance at Dec. 31, 2019	$ 0	$ 0	$ (8,823)	$ 0	$ (8,823)	$ 36,207	35,714	333,699	677		406,297
Net income						0	0	13,232	0		13,232
Net change in accumulated other comprehensive income						0	0	0	5,775		5,775
Stock compensation expense						$ 0	817	0	0		817
Stock issued for share-based awards, net of witholdings to satisfy employee tax obligations (in shares)						62
Stock issued for share-based awards, net of witholdings to satisfy employee tax obligations						$ 203	1,858	(3,546)	0		(1,485)
Cash dividends declared						$ 0	0	(6,111)	0		(6,111)
Shares cancelled (in shares)						(1)
Shares cancelled						$ (2)	(22)	24	0		0
Balance (in shares) at Mar. 31, 2020						22,665
Balance at Mar. 31, 2020						$ 36,408	$ 38,367	$ 328,475	$ 6,452	[1]	$ 409,702

[1] December 31, 2017 AOCI component balances reflect a correction of incorrectly reported year-end balances in the Footnote titled "Other Comprehensive Income (Loss)" of the 2017 Form 10-K, which were presented as $(2,278), $234, and $(392) for securities AFS, cash flow hedges, and minimum pension liability, respectively.