Condensed Consolidated Statements of Changes in Stockholders' Equity - USD ($) $ in Thousands	Total	Common Stock	Treasury Stock	Additional Paid-In Capital	Accumulated Other Comprehensive Loss	Retained Earnings
Beginning Balance at Dec. 31, 2019	$ 55,704	$ 12,094	$ (14,235)	$ 8,262	$ (1,988)	$ 51,571
Beginning Balance, shares at Dec. 31, 2019		3,350,833
Net income	4,476					4,476
Other comprehensive income (loss)	(128)				(128)
Stock compensation expense	602			602
Distributions to shareholders	(800)					(800)
Cash settlement of stock options	(560)			(560)
Purchase of treasury stock	(287)		(287)
Purchase of treasury stock (shares)		(14,420)
Ending Balance at Jun. 30, 2020	59,007	$ 12,094	(14,522)	8,304	(2,116)	55,247
Ending Balance, shares at Jun. 30, 2020		3,336,413
Beginning Balance at Mar. 31, 2020	55,824	$ 12,094	(14,449)	8,048	(2,317)	52,448
Beginning Balance, shares at Mar. 31, 2020		3,340,114
Net income	3,199					3,199
Other comprehensive income (loss)	201				201
Stock compensation expense	359			359
Distributions to shareholders	(400)					(400)
Cash settlement of stock options	(103)			(103)
Purchase of treasury stock	(73)		(73)
Purchase of treasury stock (shares)		(3,701)
Ending Balance at Jun. 30, 2020	59,007	$ 12,094	(14,522)	8,304	(2,116)	55,247
Ending Balance, shares at Jun. 30, 2020		3,336,413
Beginning Balance at Dec. 31, 2020	62,717	$ 12,101	(14,522)	7,931	(826)	58,033
Beginning Balance, shares at Dec. 31, 2020		3,338,913
Net income	9,277					9,277
Other comprehensive income (loss)	(20)				(20)
Stock compensation expense	886			886
Distributions to shareholders	(895)					(895)
Issuance of common stock	2,698	$ 475		2,223
Issuance of common stock (shares)		190,295
Cash settlement of stock options	(211)			(211)
Ending Balance at Jun. 30, 2021	74,452	$ 12,576	(14,522)	10,829	(846)	66,415
Ending Balance, shares at Jun. 30, 2021		3,529,208
Beginning Balance at Mar. 31, 2021	64,627	$ 12,145	(14,522)	8,375	(1,014)	59,643
Beginning Balance, shares at Mar. 31, 2021		3,356,614
Net income	7,230					7,230
Other comprehensive income (loss)	168				168
Stock compensation expense	580			580
Distributions to shareholders	(458)					(458)
Issuance of common stock	2,516	$ 431		2,085
Issuance of common stock (shares)		172,594
Cash settlement of stock options	(211)			(211)
Ending Balance at Jun. 30, 2021	$ 74,452	$ 12,576	$ (14,522)	$ 10,829	$ (846)	$ 66,415
Ending Balance, shares at Jun. 30, 2021		3,529,208