CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands		Total	Common stock		Additional paid-in capital	Accumulated deficit	Accumulated other comprehensive income (loss)	Treasury stock
Beginning Balance (in shares) at Dec. 31, 2017	[1]		3,496
Beginning Balance at Dec. 31, 2017		$ 43,152	$ 3		$ 483,589	$ (443,419)	$ 10,709	$ (7,730)
Beginning Balance, treasury stock (in shares) at Dec. 31, 2017	[1]							(380)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income		7,867				7,867
Other comprehensive income (loss), translation adjustments		(458)					(458)
Other comprehensive income (loss), pension liability adjustment		(38)					(38)
Amount of cumulative translation adjustments reclassified to the statements of operations		(10,819)					(10,819)
Purchase of treasury stock (in shares)	[1]							(15)
Purchases of treasury stock		(208)						$ (208)
Purchase of restricted stock from employees (in shares)	[1]							(28)
Purchase of restricted stock from employees		(548)						$ (548)
Stock-based compensation and vesting of restricted stock units (in shares)	[1]		117
Stock-based compensation and vesting of restricted stock units		$ 1,539	$ 1		1,538
Ending Balance, treasury stock (in shares) at Dec. 31, 2018		423						(423)	[1]
Ending Balance (in shares) at Dec. 31, 2018		3,190	3,613	[1]
Ending Balance at Dec. 31, 2018		$ 40,487	$ 4		485,127	(435,552)	(606)	$ (8,486)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net (loss) income		(955)				(955)
Other comprehensive income (loss), translation adjustments		127					127
Amount of cumulative translation adjustments reclassified to the statements of operations		0
Purchase of treasury stock (in shares)	[1]							(301)
Purchases of treasury stock		(4,545)						$ (4,545)
Purchase of restricted stock from employees (in shares)	[1]		(2)
Purchase of restricted stock from employees		(41)						$ (41)
Stock-based compensation and vesting of restricted stock units (in shares)	[1]		50
Stock-based compensation and vesting of restricted stock units		$ 961			961
Ending Balance, treasury stock (in shares) at Dec. 31, 2019		726						(726)	[1]
Ending Balance (in shares) at Dec. 31, 2019		2,937	3,663	[1]
Ending Balance at Dec. 31, 2019		$ 36,034	$ 4		$ 486,088	$ (436,507)	$ (479)	$ (13,072)

[1] Common stock and Treasury stock for all periods presented reflect the Company's 1-for-10 reverse stock split, which was effective June 10, 2019.