CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock	Additional Paid-In Capital and Accumulated Other Comprehensive Income (Loss)	Retained Earnings
Beginning balance (in shares) at Dec. 31, 2020		19,094,452
Beginning balance at Dec. 31, 2020	$ 199,632	$ 2	$ 90,328	$ 109,302
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	(22,180)			(22,180)
Issuance of common stock under the Employee Stock Purchase Plan (in shares)		16,015
Issuance of common stock under the Employee Stock Purchase Plan	132		132
Issuance of common stock for vested restricted stock units under the 2012 equity plan (in shares)		373,612
Purchase of common stock for tax withholding (in shares)		(172,594)
Purchase of common stock for tax withholding	(1,860)		(1,860)
Amortization of stock-based compensation	7,239		7,239
Cash dividends declared	(10,117)			(10,117)
Issuance of restricted stock under the equity plans (in shares)		169,944
Cumulative translation adjustment	(136)		(136)
Ending balance (in shares) at Dec. 31, 2021		19,481,429
Ending balance at Dec. 31, 2021	172,710	$ 2	95,703	77,005
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	21,856			21,856
Issuance of common stock under the Employee Stock Purchase Plan (in shares)		23,422
Issuance of common stock under the Employee Stock Purchase Plan	210
Issuance of common stock for vested restricted stock units under the 2012 equity plan (in shares)		355,397
Purchase of common stock for tax withholding (in shares)		(133,026)
Purchase of common stock for tax withholding	(1,210)		(1,210)
Amortization of stock-based compensation	3,827		3,827
Cash dividends declared	(25,765)			(25,765)
Cumulative translation adjustment	(321)		(321)
Ending balance (in shares) at Dec. 31, 2022		19,703,800
Ending balance at Dec. 31, 2022	171,097	$ 2	97,999	73,096
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income (loss)	15,666			15,666
Issuance of common stock under the Employee Stock Purchase Plan (in shares)		409,396
Issuance of common stock under the Employee Stock Purchase Plan			210
Purchase of common stock for tax withholding (in shares)		(144,516)
Purchase of common stock for tax withholding	(1,245)		(1,245)
Amortization of stock-based compensation	4,063		4,063
Cash dividends declared	(26,165)			(26,165)
Cumulative translation adjustment	145		145
Ending balance (in shares) at Dec. 31, 2023		19,992,102
Ending balance at Dec. 31, 2023	$ 163,771	$ 2	$ 101,172	$ 62,597