Consolidated Statements of Stockholders' Equity (USD $) In Thousands, unless otherwise specified	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Nil Coupon Perpetual Loan Notes [Member]	Total
Balance at Dec. 31, 2008	$ 241	$ 118,588	$ (45,522)	$ 187	$ 81	$ 73,575
Balance (in Shares) at Dec. 31, 2008	24,111
Comprehensive loss:
Net loss (income)			(2,306)			(2,306)
Foreign currency translation adjustments				82		82
Comprehensive income						(2,224)
Exercise of stock options	1	605				606
Exercise of stock options, shares (in Shares)	101
Tax benefit from stock compensation expense		78				78
Stock compensation expense		6,097				6,097
Reclassification of liability award		90				90
Balance at Dec. 31, 2009
Comprehensive loss:
Net loss (income)			1,753			1,753
Foreign currency translation adjustments				(26)		(26)
Comprehensive income						1,727
Exercise of stock options		10				10
Exercise of stock options, shares (in Shares)	1
Repurchase of nil coupon perpetual loan notes					(5)	(5)
Stock compensation expense		4,274				4,274
Tax effect of expired vested options		(318)				(318)
Balance at Dec. 31, 2010	242	129,424	(46,075)	243	76	83,910
Balance (in Shares) at Dec. 31, 2010	24,213
Comprehensive loss:
Net loss (income)			6,148			6,148
Foreign currency translation adjustments				103		103
Unrealized gain on marketable securities, net of tax				35		35
Comprehensive income						6,286
Exercise of stock options	1	375				376
Exercise of stock options, shares (in Shares)	81
Tax benefit from stock compensation expense		77				77
Issuance of deferred shares of stock	1	(1)
Issuance of deferred shares of stock (in Shares)	51
Repurchases of common shares	(7)					(4,111)
Repurchases of common shares (in Shares)	(701)
Stock compensation expense		2,810				2,810
Tax effect of expired vested options		(335)				(335)
Balance at Dec. 31, 2011	$ 237	$ 132,350	$ (44,031)	$ 381	$ 76	$ 89,013
Balance (in Shares) at Dec. 31, 2011	23,644