CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Common Stock	Additional Paid-In Capital	Accumulated Deficit	Total
Balance at Dec. 31, 2018	$ 215	$ 96,376	$ (34,694)	$ 61,897
Balance (in shares) at Dec. 31, 2018	21,516,000
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of unrestricted stock	$ 1	(1)
Issuance of unrestricted stock (in shares)	69,000
Shares surrendered by employees to pay taxes related to unrestricted stock		(49)		(49)
Shares surrendered by employees to pay taxes related to unrestricted stock (in shares)	(14,000)
Stock-based compensation expense		14		14
Repurchase of common stock		(78)		(78)
Repurchase of common stock (in shares)	(20,000)
Net income (loss)			228	228
Balance at Mar. 31, 2019	$ 216	96,262	(34,466)	62,012
Balance (in shares) at Mar. 31, 2019	21,551,000
Balance at Dec. 31, 2019	$ 214	96,255	(43,034)	$ 53,435
Balance (in shares) at Dec. 31, 2019	21,443,000			21,442,781
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of unrestricted stock	$ 1	(1)
Issuance of unrestricted stock (in shares)	94,000
Shares surrendered by employees to pay taxes related to unrestricted stock		(50)		$ (50)
Shares surrendered by employees to pay taxes related to unrestricted stock (in shares)	(15,000)
Stock-based compensation expense		83		83
Net income (loss)			(1,060)	(1,060)
Balance at Mar. 31, 2020	$ 215	$ 96,287	$ (44,094)	$ 52,408
Balance (in shares) at Mar. 31, 2020	21,522,000			21,521,886