Condensed Consolidated Statements of Equity (USD $) In Thousands, except Share data	Total		Common Stock	Additional Paid-in Capital	Treasury Stock	Accumulated Deficit	Accumulative Other Comprehensive Income	Noncontrolling Interest
Beginning Balances at Dec. 31, 2011	$ 96,933		$ 58	$ 331,758	$ (2,777)	$ (235,675)	$ 1,777	$ 1,792
Beginning Balances (in shares) at Dec. 31, 2011			58,309,000
Net loss	(53,568)					(50,336)		(3,232)
Other comprehensive loss	(433)						(398)	(35)
Issuance of common stock in connection with payment solution acquisition (in shares)			1,358,000
Issuance of common stock in connection with payment solution acquisition	3,041		1	3,040
Noncontrolling interest in connection with payment solution acquisition	2,131							2,131
Issuance of common shares to acquire additional noncontrolling interest in payment solution (in shares)			548,000
Issuance of common shares to acquire additional noncontrolling interest in payment solution			1	1,167				(1,168)
Acquisition of noncontrolling interest in idOnDemand	(500)			(139)				(361)
Issuance of common stock in connection with earn-out agreement (in shares)			57,000
Issuance of common stock in connection with earn-out agreement	128			128
Issuance of common stock in connection with ESPP (in shares)			298,000
Issuance of common stock in connection with ESPP	341		1	340
Issuance of common stock in connection with stock bonus and incentive plans (in shares)			239,000
Issuance of common stock in connection with stock bonus and incentive plans	420			420
Stock options grants in connection with stock bonus and incentive plans	99			99
Stock-based compensation expense for stock options	816			816
Stock-based compensation expense for ESPP	182			182
Ending Balances at Dec. 31, 2012	49,590	[1]	61	337,811	(2,777)	(286,011)	1,379	(873)
Ending Balances (in shares) at Dec. 31, 2012			60,809,000
Net loss	(33,597)					(31,889)		(1,708)
Other comprehensive loss	(642)						(586)	(56)
Issuance of common stock in connection with payment solution acquisition	(217)			(217)
Issuance of common stock in connection with ESPP (in shares)			192,000
Issuance of common stock in connection with ESPP	132			132
Issuance of common stock in connection with stock bonus and incentive plans (in shares)			132,000
Issuance of common stock in connection with stock bonus and incentive plans	119			119
Stock options grants in connection with stock bonus and incentive plans	48			48
Stock-based compensation expense for stock options	706			706
Stock-based compensation expense for ESPP	151			151
Issuance of common stock in connection with capital raise, net of issuance costs (in shares)			3,659,000
Issuance of common stock in connection with capital raise, net of issuance costs	2,773		4	2,769
Issuance of common stock in connection with private placement, net of issuance costs	6,281		9	6,272
Issuance of common stock in connection with private placement, net of issuance costs (in shares)			9,348,000
Issuance of warrants in connection with amendment of secured debt facility	513			513
Ending Balances at Sep. 30, 2013	$ 25,857		$ 74	$ 348,304	$ (2,777)	$ (317,900)	$ 793	$ (2,637)
Ending Balances (in shares) at Sep. 30, 2013			74,140,000

[1] The condensed consolidated balance sheet has been derived from the audited consolidated financial statements at December 31, 2012 but does not include all the information and footnotes required by U.S. generally accepted accounting principles for complete financial statements.