CONDENSED CONSOLIDATED STATEMENT OF STOCKHOLDERS’ EQUITY (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Total	Common Stock	Additional Paid-in-Capital	Retained Earnings (Accumulated Deficit)
Beginning Balance (in shares) at Dec. 31, 2018		14,083
Beginning Balance at Dec. 31, 2018	$ 159,783	$ 14	$ 164,793	$ (5,024)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	9,241			9,241
Issuance of restricted stock (in shares)		272
Issuance of restricted stock	0
Stock-based compensation	7,297		7,297
Dividends	(4,293)			(4,293)
Ending Balance (in shares) at Sep. 30, 2019		14,356
Ending Balance at Sep. 30, 2019	172,031	$ 14	172,093	(76)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period		1
Common stock issued upon exercise of stock options	3		3
Beginning Balance (in shares) at Jun. 30, 2019		14,355
Beginning Balance at Jun. 30, 2019	167,159	$ 14	169,920	(2,775)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	4,135			4,135
Stock-based compensation	2,170		2,170
Dividends	(1,436)			(1,436)
Ending Balance (in shares) at Sep. 30, 2019		14,356
Ending Balance at Sep. 30, 2019	172,031	$ 14	172,093	(76)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period		1
Common stock issued upon exercise of stock options	3		3
Beginning Balance (in shares) at Dec. 31, 2019		14,356
Beginning Balance at Dec. 31, 2019	184,347	$ 14	174,618	9,715
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	11,123			11,123
Issuance of restricted stock (in shares)		156
Issuance of restricted stock	0	$ 1	(1)
Stock-based compensation	5,174		5,174
Dividends	(4,338)			(4,338)
Ending Balance (in shares) at Sep. 30, 2020		14,512
Ending Balance at Sep. 30, 2020	196,306	$ 15	179,791	16,500
Beginning Balance (in shares) at Jun. 30, 2020		14,512
Beginning Balance at Jun. 30, 2020	190,925	$ 15	178,227	12,683
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	5,268			5,268
Stock-based compensation	1,564		1,564
Dividends	(1,451)			(1,451)
Ending Balance (in shares) at Sep. 30, 2020		14,512
Ending Balance at Sep. 30, 2020	$ 196,306	$ 15	$ 179,791	$ 16,500