CONSOLIDATED STATEMENT OF SHAREHOLDERS' EQUITY - (UNAUDITED) - USD ($) $ in Thousands	Total	Common stock Par value	Additional paid in capital	Retained earnings	Accumulated other comprehensive income	Treasury stock
March 31, 2018 at Dec. 31, 2017	$ 40,241	$ 0	$ 34,928	$ 4,190	$ 5,984	$ (4,861)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(264)			(264)
Payment of cash dividends	(340)			(340)
Charge related to stock-based compensation	36		36
Issuance of unrestricted shares	245		(1,748)			1,993
Foreign currency translations	334				334
June 30, 2018 at Mar. 31, 2018	40,252	0	33,216	3,586	6,318	(2,868)
March 31, 2018 at Dec. 31, 2017	40,241	0	34,928	4,190	5,984	(4,861)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(2,310)
Foreign currency translations	(1,757)
June 30, 2018 at Sep. 30, 2018	27,872	0	33,859	(3)	4,227	(10,211)
March 31, 2018 at Mar. 31, 2018	40,252	0	33,216	3,586	6,318	(2,868)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(384)			(384)
Payment of cash dividends	(340)			(340)
Charge related to stock-based compensation	590		590
Repurchase of common stock	(6,830)					(6,830)
Foreign currency translations	(2,026)				(2,026)
June 30, 2018 at Jun. 30, 2018	31,262	0	33,806	2,862	4,292	(9,698)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(1,663)			(1,663)
Payment of cash dividends	(1,202)			(1,202)
Charge related to stock-based compensation	139		139
Stock Issued During Period, Value, Stock Options Exercised	15		(13)			28
Issuance of unrestricted shares	(1)		(73)			72
Repurchase of common stock	(613)					(613)
Foreign currency translations	(65)				(65)
June 30, 2018 at Sep. 30, 2018	27,872	0	33,859	(3)	4,227	(10,211)
March 31, 2018 at Dec. 31, 2018	25,324	0	33,939	(2,782)	4,337	(10,170)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	688			688
Payment of cash dividends	(303)			(303)
Charge related to stock-based compensation	107		107
Issuance of unrestricted shares	280		(141)			421
Repurchase of common stock	(9)					(9)
Foreign currency translations	(441)				(441)
June 30, 2018 at Mar. 31, 2019	25,646	0	33,905	(2,397)	3,896	(9,758)
March 31, 2018 at Dec. 31, 2018	25,324	0	33,939	(2,782)	4,337	(10,170)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	1,184
Foreign currency translations	(1,393)
June 30, 2018 at Sep. 30, 2019	24,645	0	34,061	(2,499)	2,944	(9,861)
March 31, 2018 at Mar. 31, 2019	25,646	0	33,905	(2,397)	3,896	(9,758)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	1,987			1,987
Payment of cash dividends	(300)			(300)
Charge related to stock-based compensation	160		160
Stock Issued During Period, Value, Stock Options Exercised	(1)		(39)			38
Repurchase of common stock	(58)					(58)
Foreign currency translations	(189)				(189)
June 30, 2018 at Jun. 30, 2019	27,245	0	34,026	(710)	3,707	(9,778)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss	(1,490)			(1,490)
Payment of cash dividends	(299)			(299)
Charge related to stock-based compensation	106		106
Stock Issued During Period, Value, Stock Options Exercised	0
Issuance of unrestricted shares	0		(71)			71
Repurchase of common stock	(154)					(154)
Foreign currency translations	(763)				(763)
June 30, 2018 at Sep. 30, 2019	$ 24,645	$ 0	$ 34,061	$ (2,499)	$ 2,944	$ (9,861)