CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY AND COMPREHENSIVE LOSS (USD $) In Thousands, unless otherwise specified	Total USD ($)	Private Placement USD ($)	Settlement Of Preacquisition Liabilities USD ($)	Capital Raise USD ($)	idOnDemand USD ($)	Earnout Agreement USD ($)	Common Stock USD ($)	Common Stock Private Placement USD ($)	Common Stock Settlement Of Preacquisition Liabilities	Common Stock Capital Raise USD ($)	Common Stock idOnDemand USD ($)	Common Stock Earnout Agreement	Additional Paid-in Capital USD ($)	Additional Paid-in Capital Private Placement USD ($)	Additional Paid-in Capital Settlement Of Preacquisition Liabilities USD ($)	Additional Paid-in Capital Capital Raise USD ($)	Additional Paid-in Capital idOnDemand USD ($)	Additional Paid-in Capital Earnout Agreement USD ($)	Treasury Stock USD ($)	Accumulated Deficit USD ($)	Accumulative Other Comprehensive Income USD ($)	Noncontrolling Interest USD ($)	Comprehensive Loss USD ($)
Beginning Balances at Dec. 31, 2008	$ 28,126						$ 16						$ 229,788						$ (2,777)	$ (202,199)	$ 3,298
Beginning Balances (in shares) at Dec. 31, 2008							16,362
Issuance of common stock in connection with acquisition (in shares)							9,391
Issuance of common stock in connection with acquisition	23,785						10						23,775
Stock-based compensation expense	347												347
Comprehensive loss:
Net loss	(14,179)																			(14,179)			(14,179)
Foreign currency translation adjustment	(139)																				(139)		(139)
Comprehensive loss																							(14,318)
Ending Balances at Dec. 31, 2009	37,940						26						253,910						(2,777)	(216,378)	3,159
Ending Balances (in shares) at Dec. 31, 2009							25,753
Issuance of common stock in connection with capital raise, net of issuance costs (in shares)								4,098
Issuance of common stock in connection with capital raise, net of issuance costs		9,586						4						9,582
Issuance of common stock in connection with acquisition (in shares)							17,900
Issuance of common stock in connection with acquisition	38,776						18						38,758
Issuance of common stock for settlement of pre-acquisition liabilities and earn-out agreements (in shares)									150
Issuance of common stock for settlement of pre-acquisition liabilities and earn-out agreements	(343)		343												343
Fair value of stock options converted in connection with Bluehill ID acquisition	3,007												3,007
Assumption of treasury stock in connection with Bluehill ID acquisition	(2,880)																		(2,880)
Repurchase of treasury stock in connection with Bluehill ID acquisition	2,478												(402)						2,880
Issuance of common shares to acquire additional noncontrolling interest in a subsidiary (in shares)							88
Issuance of common shares to acquire additional noncontrolling interest in a subsidiary													199									(199)
Issuance of common stock in connection with stock bonus and incentive plans (in shares)							99
Issuance of common stock in connection with stock bonus and incentive plans	174												174
Issuance of common stock to affiliates for conversion of loan (in shares)							181
Issuance of common stock to affiliates for conversion of loan	291												291
Issuance of common stock upon exercise of options (in shares)							7
Issuance of common stock upon exercise of options	11												11
Stock-based compensation expense	330												330
Noncontrolling interest in connection with acquisition	3,057																					3,057
Comprehensive loss:
Net loss	(10,148)																			(9,518)		(630)	(10,148)
Foreign currency translation adjustment	(3,161)																				(2,836)	(325)	(3,161)
Comprehensive loss																							(13,309)
Ending Balances at Dec. 31, 2010	79,804						48						306,203						(2,777)	(225,896)	323	1,903
Ending Balances (in shares) at Dec. 31, 2010							48,276
Issuance of common stock in connection with capital raise, net of issuance costs (in shares)										7,843
Issuance of common stock in connection with capital raise, net of issuance costs				18,212						8						18,204
Issuance of common stock in connection with acquisition (in shares)											996
Issuance of common stock in connection with acquisition					3,024						1						3,023
Issuance of common stock for settlement of pre-acquisition liabilities and earn-out agreements (in shares)												137
Issuance of common stock for settlement of pre-acquisition liabilities and earn-out agreements	(316)					316												316
Issuance of common shares to acquire additional noncontrolling interest in a subsidiary (in shares)							3
Issuance of common shares to acquire additional noncontrolling interest in a subsidiary													8									(8)
Issuance of common stock in connection with stock bonus and incentive plans (in shares)							567
Issuance of common stock in connection with stock bonus and incentive plans	1,462						1						1,461
Shares issued to board members as incentive/board fees (in shares)							60
Shares issued to board members as incentive/board fees	166												166
Issuance of common stock upon exercise of warrants (in shares)							406
Issuance of common stock upon exercise of warrants	1,075												1,075
Issuance of common stock upon exercise of options (in shares)							21
Issuance of common stock upon exercise of options	57												57
Stock-based compensation expense	439												439
Stock-based compensation expense for ESPP	134												134
Stock-based compensation expense for options grants in connection with stock bonus and incentive plans	672												672
Noncontrolling interest in connection with acquisition	468																					468
Comprehensive loss:
Net loss	(9,970)																			(9,502)		(468)	(9,970)
Foreign currency translation adjustment	1,612																				1,715	(103)	1,612
Comprehensive loss																							(8,358)
Ending Balances at Dec. 31, 2011	$ 97,471						$ 58						$ 331,758						$ (2,777)	$ (235,398)	$ 2,038	$ 1,792
Ending Balances (in shares) at Dec. 31, 2011							58,309