Consolidated Statements of Stockholders' Equity (USD $)	Common Stock [Member]	Treasury Stock [Member]	Additional Paid-in Capital [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Retained Earnings [Member]	Total
Balance at Dec. 31, 2011	$ 3,000	$ (7,263,000)	$ 268,162,000	$ (1,429,000)	$ (21,549,000)	$ 237,924,000
Balance (in Shares) at Dec. 31, 2011	34,091
Issuance of common stock for the exercise of options and warrants			2,258,000			2,258,000
Issuance of common stock for the exercise of options and warrants (in Shares)	303
Issuance of common stock, from treasury for acquisitions		58,000	27,000			85,000
Issuance of common stock, from treasury for acquisitions (in Shares)	6
Issuance of common stock for services (in Shares)	47
Shares recovered relating to acquisitions		(896,000)				(896,000)
Shares recovered relating to acquisitions (in Shares)	(67)
Share-based compensation			12,649,000			12,649,000
Excess tax benefit on share-based compensation			2,853,000			2,853,000
Net loss					(14,939,000)	(14,939,000)
Foreign currency translation adjustments				4,612,000		4,612,000
Stock repurchases under stock repurchase programs		(387,000)				(387,000)
Stock repurchases under stock repurchase programs (in Shares)	(39)					39,000
Other			(11,000)			(11,000)
Balance at Dec. 31, 2012	3,000	(8,488,000)	285,938,000	3,183,000	(36,488,000)	244,148,000
Balance (in Shares) at Dec. 31, 2012	34,341
Issuance of common stock for the exercise of options and warrants	1,000		24,261,000			24,262,000
Issuance of common stock for the exercise of options and warrants (in Shares)	2,297
Issuance of common stock for services (in Shares)	290
Share-based compensation			17,187,000			17,187,000
Excess tax benefit on share-based compensation			6,610,000			6,610,000
Net loss					(10,216,000)	(10,216,000)
Foreign currency translation adjustments				(9,120,000)		(9,120,000)
Balance at Dec. 31, 2013	4,000	(8,488,000)	333,996,000	(5,937,000)	(46,704,000)	272,871,000
Balance (in Shares) at Dec. 31, 2013	36,928
Issuance of common stock for the exercise of options and warrants			42,437,000			42,437,000
Issuance of common stock for the exercise of options and warrants (in Shares)	3,008
Issuance of common stock for services (in Shares)	435
Share-based compensation			18,225,000			18,225,000
Excess tax benefit on share-based compensation			9,287,000			9,287,000
Net loss					10,494,000	10,494,000
Foreign currency translation adjustments				(8,439,000)		(8,439,000)
Stock repurchases under stock repurchase programs (in Shares)						0
Balance at Dec. 31, 2014	$ 4,000	$ (8,488,000)	$ 403,945,000	$ (14,376,000)	$ (36,210,000)	$ 344,875,000
Balance (in Shares) at Dec. 31, 2014	40,371