Consolidated Statements of Stockholders' Equity - USD ($) $ in Thousands	Common Stock	Additional Paid-In Capital	Accumulated Other Comprehensive (Loss) Income	Retained Earnings	Treasury Stock	Total
Balances at Dec. 31, 2016	$ 657	$ 22,831	$ (223)	$ 209,770	$ (53,396)	$ 179,639
Balances (in shares) at Dec. 31, 2016	5,574,140
Increase (Decrease) in Stockholders' Equity
Stock options exercised		73				73
Stock options exercised (in shares)	2,000
Stock-based compensation	$ 2	1,403				1,405
Stock-based compensation (in shares)	16,695
Treasury shares purchased					(309)	$ (309)
Treasury shares purchased (in shares)	(4,014)					0
Cash dividends paid				(3,013)		$ (3,013)
Net income				27,148		27,148
Mark to market of foreign exchange hedges, net of $4 tax benefit and $29 tax benefit and $155 tax expense for the years ended December 31, 2109, 2018 and 2017, respectively			309			309
Comprehensive (loss) income			309	27,148		27,457
Balances at Dec. 31, 2017	$ 659	24,307	86	233,905	(53,705)	205,252
Balances (in shares) at Dec. 31, 2017	5,588,821
Increase (Decrease) in Stockholders' Equity
Stock options exercised		73				73
Stock options exercised (in shares)	6,339
Stock-based compensation	$ 2	1,487				1,489
Stock-based compensation (in shares)	17,626
Treasury shares purchased					(411)	$ (411)
Treasury shares purchased (in shares)	(5,385)					0
Cash dividends paid				(3,022)		$ (3,022)
Net income				19,685		19,685
Mark to market of foreign exchange hedges, net of $4 tax benefit and $29 tax benefit and $155 tax expense for the years ended December 31, 2109, 2018 and 2017, respectively			(99)			(99)
Comprehensive (loss) income			(99)	19,685		19,586
Balances at Dec. 31, 2018	$ 661	25,867	(13)	250,568	(54,116)	222,967
Balances (in shares) at Dec. 31, 2018	5,607,401
Increase (Decrease) in Stockholders' Equity
Stock options exercised		75				75
Stock options exercised (in shares)	2,000
Stock-based compensation	$ 2	1,522				1,524
Stock-based compensation (in shares)	18,900
Treasury shares purchased					(444)	$ (444)
Treasury shares purchased (in shares)	(5,475)					0
Cash dividends paid				(33,058)		$ (33,058)
Net income				26,056		26,056
Mark to market of foreign exchange hedges, net of $4 tax benefit and $29 tax benefit and $155 tax expense for the years ended December 31, 2109, 2018 and 2017, respectively			12			12
Comprehensive (loss) income			12	26,056		26,068
Balances at Dec. 31, 2019	$ 663	$ 27,464	$ (1)	$ 243,566	$ (54,560)	$ 217,132
Balances (in shares) at Dec. 31, 2019	5,622,826