CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands	Common Stock and Paid-in Capital	Common Stock	Unamortized Cost of Equity Awards	Retained Earnings	Accumulated Other Comprehensive Income (Loss)	Total
Balances at Dec. 31, 2018	$ 33,613	$ 36,779	$ (3,166)	$ 76,718	$ (8,518)	$ 101,813
Balances (in shares) at Dec. 31, 2018		9,485
Increase (Decrease) in Stockholders' Equity
Stock transactions under employee benefit stock plans	1,088	$ 1,088				1,088
Stock transactions under employee benefit stock plans (in shares)		27
Issuance of restricted stock, net of forfeitures	330	$ 4,059	(3,729)			330
Issuance of restricted stock, net of forfeitures (in shares)		96
Stock compensation expense	596		596			596
Shares withheld for payment of employee payroll taxes	(63)	$ (63)				(63)
Shares withheld for payment of employee payroll taxes (in shares)		(1)
Foreign currency translation adjustment					(887)	(887)
Accumulated income (loss) on derivatives					(343)	(343)
Tax effect of derivative transactions					81	81
Net income				4,470		4,470
Dividends to stockholders				(287)		(287)
Balances at Mar. 31, 2019	35,564	$ 41,863	(6,299)	80,901	(9,667)	106,798
Balances (in shares) at Mar. 31, 2019		9,607
Balances at Dec. 31, 2019	37,136	$ 41,642	(4,506)	92,589	(10,531)	$ 119,194
Balances (in shares) at Dec. 31, 2019		9,599				9,599
Increase (Decrease) in Stockholders' Equity
Stock transactions under employee benefit stock plans	1,252	$ 1,252				$ 1,252
Stock transactions under employee benefit stock plans (in shares)		32
Issuance of restricted stock, net of forfeitures	485	$ 3,574	(3,089)			485
Issuance of restricted stock, net of forfeitures (in shares)		104
Stock compensation expense	789		789			789
Shares withheld for payment of employee payroll taxes	(256)	$ (256)				(256)
Shares withheld for payment of employee payroll taxes (in shares)		(24)
Foreign currency translation adjustment					(2,428)	(2,428)
Accumulated income (loss) on derivatives					(1,432)	(1,432)
Tax effect of derivative transactions					344	344
Net income				4,035		4,035
Dividends to stockholders				(290)		(290)
Balances at Mar. 31, 2020	$ 39,406	$ 46,212	$ (6,806)	$ 96,334	$ (14,047)	$ 121,693
Balances (in shares) at Mar. 31, 2020		9,711				9,711