Condensed Consolidated Statements of Changes in Equity (Unaudited) (USD $) In Thousands, except Share data	Total USD ($)	Series A convertible preferred stock	Series A convertible preferred stock amount USD ($)	Common Stock USD ($)	Additional paid-in capital USD ($)	Accumulated other comprehensive income USD ($)	Accumulated deficit USD ($)	Noncontrolling interests USD ($)
Beginning balance at Dec. 31, 2009	$ 160,918		$ 0	$ 42	$ 230,512	$ 76	$ (71,415)	$ 1,703
Beginning balance, shares at Dec. 31, 2009		0		42,455,531
Vesting of restricted stock units, shares				161,419
Vesting of restricted stock units	1			1
Stock-based compensation	1,655				1,655
Net income (loss)	(4,190)						(4,640)	450
Cumulative translation adjustment	533					332		201
Ending balance at Sep. 30, 2010	158,917		0	43	232,167	408	(76,055)	2,354
Ending balance, shares at Sep. 30, 2010		0		42,616,950
Beginning balance at Dec. 31, 2010	158,119		0	43	234,125	1,126	(76,584)	(591)
Beginning balance, shares at Dec. 31, 2010		0		42,616,950
Vesting of restricted stock units, shares				148,290
Stock-based compensation	1,109				1,109
Common stock issued for payment of bonus, shares				34,115
Common stock issued as a form of payment for bonus	125				125
Issuance of Series A convertible preferred stock in connection with the acquisition of StarTrak, shares		183,550
Issuance of Series A convertible preferred stock in connection with the acquisition of StarTrak	1,834		1,834
Issuance of common stock in connection with the acquisition of StarTrak, shares				2,869,172
Issuance of common stock in connection with the acquisition of StarTrak	8,349			3	8,346
Series A convertible preferred stock dividend, shares		905
Series A convertible preferred stock dividend			9				(9)
Payment upon exercise of SARs	(24)				(24)
Net income (loss)	(767)						(717)	(50)
Cumulative translation adjustment	266					319		(53)
Ending balance at Sep. 30, 2011	$ 169,011		$ 1,843	$ 46	$ 243,681	$ 1,445	$ (77,310)	$ (694)
Ending balance, shares at Sep. 30, 2011		184,455		45,668,527