CONSOLIDATED STATEMENT OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) shares in Thousands, $ in Thousands		Total	Common Stock, $0.001 par value		Additional paid-in capital	Accumulated deficit	Accumulated other comprehensive income (loss)	Treasury stock
Beginning Balance (in shares) at Dec. 31, 2018	[1]		3,613
Beginning Balance at Dec. 31, 2018		$ 40,487	$ 4		$ 485,127	$ (435,552)	$ (606)	$ (8,486)
Beginning Balance, treasury stock (in shares) at Dec. 31, 2018	[1]							(423)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss		(955)				(955)
Other comprehensive income (loss), translation adjustments		127					127
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		2,936	3,663	[1]
Ending Balance at Dec. 31, 2019		$ 36,034	$ 4		486,088	(436,507)	(479)	$ (13,072)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss		(1,243)				(1,243)
Other comprehensive income (loss), translation adjustments		1,005					1,005
Purchase of treasury stock (in shares)	[1]							(260)
Purchases of treasury stock		(2,239)						$ (2,239)
Purchase of restricted stock from employees (in shares)	[1]		(1)
Purchase of restricted stock from employees		(14)						$ (14)
Stock-based compensation and vesting of restricted stock units (in shares)	[1]		9
Stock-based compensation and vesting of restricted stock units		$ 737			737
Ending Balance, treasury stock (in shares) at Dec. 31, 2020		987						(987)	[1]
Ending Balance (in shares) at Dec. 31, 2020		2,685	3,672	[1]
Ending Balance at Dec. 31, 2020		$ 34,280	$ 4		$ 486,825	$ (437,750)	$ 526	$ (15,325)

[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.