CONDENSED CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Adjustment for cumulative effect from change in accounting principle (ASU 2016-13)	Common Stock	Additional Paid-In Capital	Retained Earnings	Retained Earnings Adjustment for cumulative effect from change in accounting principle (ASU 2016-13)	Other Cumulative Comprehensive Loss	Treasury Stock and Company Stock Held for Deferred Compensation
Balances (in shares) at Dec. 31, 2018			14,987,962					82,186
Balances at Dec. 31, 2018	$ 134,286		$ 749	$ 80,077	$ 89,291		$ (35,014)	$ (817)
Increase (Decrease) in Stockholders' Equity
Net (loss) income	32,414				32,414
Change in cumulative foreign currency translation adjustment	1,119						1,119
Shares issued in connection with stock compensation plans (in shares)			119,952					7,502
Shares issued in connection with stock compensation plans	358		$ 7	351
Stock-based compensation	2,411			2,411
Dividends declared	(598)				(598)
Treasury stock activity (in shares)								(386,139)
Treasury stock activity	(6,489)			14				$ (6,503)
Balances (in shares) at Jun. 30, 2019			15,107,914					460,823
Balances at Jun. 30, 2019	163,501		$ 756	82,853	121,107		(33,895)	$ (7,320)
Balances (in shares) at Mar. 31, 2019			15,089,080					103,384
Balances at Mar. 31, 2019	148,911		$ 755	81,122	104,162		(35,433)	$ (1,695)
Increase (Decrease) in Stockholders' Equity
Net (loss) income	17,244				17,244
Change in cumulative foreign currency translation adjustment	1,538						1,538
Shares issued in connection with stock compensation plans (in shares)			18,834
Shares issued in connection with stock compensation plans	358		$ 1	357
Stock-based compensation	1,360			1,360
Dividends declared	(299)				(299)
Treasury stock activity (in shares)								(357,439)
Treasury stock activity	(5,611)			14				$ (5,625)
Balances (in shares) at Jun. 30, 2019			15,107,914					460,823
Balances at Jun. 30, 2019	163,501		$ 756	82,853	121,107		(33,895)	$ (7,320)
Balances (in shares) at Dec. 31, 2019			15,117,207					464,532
Balances at Dec. 31, 2019	172,141	$ (50)	$ 756	85,639	119,002	$ (50)	(25,803)	$ (7,453)
Increase (Decrease) in Stockholders' Equity
Net (loss) income	(1,493)				(1,493)
Change in cumulative foreign currency translation adjustment	(235)						(235)
Shares issued in connection with stock compensation plans (in shares)			180,084
Shares issued in connection with stock compensation plans	263		$ 9	254
Stock-based compensation	2,608			2,608
Dividends declared	(1,883)				(1,883)
Treasury stock activity (in shares)								(63,449)
Treasury stock activity	(1,068)							$ (1,068)
Balances (in shares) at Jun. 30, 2020			15,297,291					527,981
Balances at Jun. 30, 2020	$ 170,283		$ 765	88,501	115,576		(26,038)	$ (8,521)
Increase (Decrease) in Stockholders' Equity
Accounting Standards Update [Extensible List]	us-gaap:AccountingStandardsUpdate201613Member
Balances (in shares) at Mar. 31, 2020			15,260,835					509,593
Balances at Mar. 31, 2020	$ 173,689		$ 763	86,832	121,224		(26,643)	$ (8,487)
Increase (Decrease) in Stockholders' Equity
Net (loss) income	(5,648)				(5,648)
Change in cumulative foreign currency translation adjustment	605						605
Shares issued in connection with stock compensation plans (in shares)			36,456
Shares issued in connection with stock compensation plans	263		$ 2	261
Stock-based compensation	1,408			1,408
Treasury stock activity (in shares)								(18,388)
Treasury stock activity	(34)							$ (34)
Balances (in shares) at Jun. 30, 2020			15,297,291					527,981
Balances at Jun. 30, 2020	$ 170,283		$ 765	$ 88,501	$ 115,576		$ (26,038)	$ (8,521)