UNAUDITED CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock	Contributed Capital	Retained Earnings
Beginning balance at Dec. 31, 2020	$ 149,092	$ 423	$ 13,340	$ 135,329
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	2,808			2,808
Stock-based compensation expense	185		185
Cancellation of shares withheld to cover taxes upon vesting of restricted awards	(31)		(31)
Dividends declared:
Common stock	(1,019)			(1,019)
Awards under LTIP	(18)			(18)
Ending balance at Mar. 31, 2021	151,017	423	13,494	137,100
Beginning balance at Dec. 31, 2020	149,092	423	13,340	135,329
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	7,517
Ending balance at Jun. 30, 2021	154,851	424	13,655	140,772
Beginning balance at Mar. 31, 2021	151,017	423	13,494	137,100
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	4,709			4,709
Stock-based compensation expense	232		232
Vesting of restricted awards	0	1	(1)
Cancellation of shares withheld to cover taxes upon vesting of restricted awards	(70)		(70)
Dividends declared:
Common stock	(1,021)			(1,021)
Awards under LTIP	(16)			(16)
Ending balance at Jun. 30, 2021	154,851	424	13,655	140,772
Beginning balance at Dec. 31, 2021	160,386	433	16,913	143,040
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	6,090			6,090
Stock-based compensation expense	195		195
Vesting of restricted awards	0	2	(2)
Cancellation of shares withheld to cover taxes upon vesting of restricted awards	(86)		(86)
Dividends declared:
Common stock	(1,048)			(1,048)
Awards under LTIP	(16)			(16)
Ending balance at Mar. 31, 2022	165,521	435	17,020	148,066
Beginning balance at Dec. 31, 2021	160,386	433	16,913	143,040
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	8,566
Ending balance at Jun. 30, 2022	167,452	436	17,541	149,475
Beginning balance at Mar. 31, 2022	165,521	435	17,020	148,066
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net earnings	2,476			2,476
Stock-based compensation expense	263		263
Cancellation of shares withheld to cover taxes upon vesting of restricted awards	(24)		(24)
Shares sold at the market	283	1	282
Dividends declared:
Common stock	(1,049)			(1,049)
Awards under LTIP	(18)			(18)
Ending balance at Jun. 30, 2022	$ 167,452	$ 436	$ 17,541	$ 149,475