Consolidated Statements of Stockholders’ Equity (USD $) In Thousands, except Share data	Total	Common Stock	Additional Paid-in Capital	Accumulated Deficit	Accumulated Other Comprehensive Income (Loss)	Nil Coupon Perpetual Loan Notes	Treasury Stock
Balance at Dec. 31, 2010	$ 83,910	$ 242	$ 129,424	$ (46,075)	$ 243	$ 76	$ 0
Balance (in Shares) at Dec. 31, 2010		24,213,000
Net (loss) income	6,148			6,148
Foreign currency translation adjustments	103				103
Unrealized (losses)/gains from marketable securities, net of tax	35				35
Exercise of stock options (in shares)		81,000
Exercise of stock options	376	1	375
Tax benefit from stock compensation expense	77		77
Stock compensation expense	2,810		2,810
Issuance of deferred shares of stock (in shares)		51,000
Issuance of deferred shares of stock	0	1	(1)
Tax effect of expired vested options	(335)		(335)
Repurchases and retirement of common shares (in Shares)		(701,000)
Repurchases and retirement of common shares	(4,111)	(7)		(4,104)
Balance at Dec. 31, 2011	89,013	237	132,350	(44,031)	381	76	0
Balance (in Shares) at Dec. 31, 2011		23,644,000
Net (loss) income	2,776			2,776
Foreign currency translation adjustments	(765)				(765)
Unrealized (losses)/gains from marketable securities, net of tax	(8)				(8)
Stock compensation expense	1,248		1,248
Issuance of deferred shares of stock	58		58
Tax effect of expired vested options	(57)		(57)
Repurchases and retirement of common shares (in Shares)		(1,605,000)
Repurchases and retirement of common shares	(7,889)	(16)		(7,873)
Common shares issued upon vesting of restricted stock units	(101)		(101)
Common shares issued upon vesting of restricted stock units		72,000
Treasury shares withheld (in shares)	(9,126)	(9,000)
Treasury shares withheld	(39)						(39)
Balance at Dec. 31, 2012	84,236	221	133,498	(49,128)	(392)	76	(39)
Balance (in Shares) at Dec. 31, 2012		22,102,000
Net (loss) income	5,101			5,101
Foreign currency translation adjustments	438				438
Unrealized (losses)/gains from marketable securities, net of tax	(9)				(9)
Exercise of stock options	811	2	809
Tax benefit from stock compensation expense	67		67
Stock compensation expense	1,798		1,798
Issuance of deferred shares of stock (in shares)		195,000
Tax effect of expired vested options	(121)		(121)
Repurchases and retirement of common shares (in Shares)	(2,306,590)
Common shares issued upon vesting of restricted stock units	(3,251)	4	(3,255)
Common shares issued upon vesting of restricted stock units		395,000
Treasury shares withheld (in shares)	(99,531)	(99,000)
Treasury shares withheld	(447)						(447)
Balance at Dec. 31, 2013	$ 88,623	$ 227	$ 132,796	$ (44,027)	$ 37	$ 76	$ (486)
Balance (in Shares) at Dec. 31, 2013		22,593,000