CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock	Contributed Capital	Retained Earnings
Beginning balance at Dec. 31, 2018	$ 146,598	$ 422	$ 11,948	$ 134,228
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	8,207			8,207
Stock-based compensation expense	478		478
Issuance of common shares for acquisition	392	1	391
Cancellation of shares withheld to cover taxes upon vesting of restricted awards	(39)		(39)
Dividends declared:
Common stock	(3,976)			(3,976)
Awards under LTIP	(19)			(19)
Ending balance at Dec. 31, 2019	151,641	423	12,778	138,440
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	995			995
Stock-based compensation expense	643		643
Cancellation of shares withheld to cover taxes upon vesting of restricted awards	(81)		(81)
Dividends declared:
Common stock	(4,070)			(4,070)
Awards under LTIP	(36)			(36)
Ending balance at Dec. 31, 2020	149,092	423	13,340	135,329
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	11,888			11,888
Stock-based compensation expense	854		854
Shares sold under at-the-market offering program	2,830	9	2,821
Vesting of restricted awards	0	1	(1)
Cancellation of shares withheld to cover taxes upon vesting of restricted awards	(101)		(101)
Dividends declared:
Common stock	(4,112)			(4,112)
Awards under LTIP	(65)			(65)
Ending balance at Dec. 31, 2021	$ 160,386	$ 433	$ 16,913	$ 143,040