Consolidated Statements of Changes in Equity (USD $) In Thousands, except Share data	Total USD ($)	StarTrak [Member] USD ($)	LMS [Member] USD ($)	Satcom [Member] USD ($)	MobileNet [Member] USD ($)	Series A Convertible Preferred Stock [Member] USD ($)	Series A Convertible Preferred Stock [Member] StarTrak [Member] USD ($)	Common Stock [Member] USD ($)	Common Stock [Member] StarTrak [Member] USD ($)	Common Stock [Member] LMS [Member] USD ($)	Common Stock [Member] Satcom [Member]	Common Stock [Member] MobileNet [Member]	Additional Paid-in Capital [Member] USD ($)	Additional Paid-in Capital [Member] StarTrak [Member] USD ($)	Additional Paid-in Capital [Member] LMS [Member] USD ($)	Additional Paid-in Capital [Member] Satcom [Member] USD ($)	Additional Paid-in Capital [Member] MobileNet [Member] USD ($)	Accumulated Other Comprehensive Income (Loss) [Member] USD ($)	Accumulated Other Comprehensive Income (Loss) [Member] Satcom [Member] USD ($)	Accumulated Deficit [Member] USD ($)	Treasury Stock [Member] USD ($)	Noncontrolling Interests [Member] USD ($)	Noncontrolling Interests [Member] Satcom [Member] USD ($)
Beginning balances at Dec. 31, 2010	$ 158,119							$ 43					$ 234,125					$ 1,126		$ (76,584)		$ (591)
Beginning balances, shares at Dec. 31, 2010								42,616,950
Vesting of restricted stock units
Vesting of restricted stock units, shares								148,290
Stock-based compensation	1,971												1,971
Common stock issued for payment of bonus	125												125
Common stock issued for payment of bonus, shares								34,115
Issuance of Series A convertible preferred stock in connection with the acquisition		1,834					1,834
Issuance of Series A convertible preferred stock in connection with the acquisition, shares							183,550
Issuance of common stock in connection with the acquisition		8,349							3					8,346
Issuance of common stock in connection with the acquisition, shares									2,869,172
Series A convertible preferred stock dividend						27														(27)
Series A convertible preferred stock dividend, shares						2,715
Payment upon exercise of SARs	(24)												(24)
Net income (loss)	(56)																			(18)		(38)
Cumulative translation adjustment	259																	226				33
Foreign currency translation adjustments	259
Ending balances at Dec. 31, 2011	170,577					1,861		46					244,543					1,352		(76,629)		(596)
Ending balances, Shares at Dec. 31, 2011						186,265		45,668,527
Vesting of restricted stock units
Vesting of restricted stock units, shares								143,334
Stock-based compensation	1,881												1,881
Conversion of Series A convertible preferred stock to common stock						(318)							318
Conversion of Series A convertible preferred stock to common stock, shares						(31,837)		53,152
Issuance of common stock in connection with the purchase of noncontrolling ownership interests		1,000		(199)												(395)			16				180
Issuance of common stock in connection with the purchase of noncontrolling ownership interests, shares											263,133
Issuance of common stock in connection with the acquisition			2,123							1					2,122
Common stock redeemed through treasury from closing of escrow agreement	(96)																				(96)
Issuance of common stock in connection with the acquisition, shares										645,162
Common stock redeemed through treasury from closing of escrow agreement, shares																					29,990
Exercise of SARs								10,260
Series A convertible preferred stock dividend						69														(69)
Series A convertible preferred stock dividend, shares						6,931
Net income (loss)	8,903																			8,742		161
Foreign currency translation adjustments	(801)																	(735)				(66)
Ending balances at Dec. 31, 2012	182,388					1,612		47					248,469					633		(67,956)	(96)	(321)
Ending balances, Shares at Dec. 31, 2012						161,359		46,783,568													29,990
Vesting of restricted stock units
Vesting of restricted stock units, shares								93,821
Stock-based compensation	2,779												2,779
Conversion of Series A convertible preferred stock to common stock						(652)							652
Conversion of Series A convertible preferred stock to common stock, shares						(65,237)		108,688
Exercise of stock options	1,826							1					1,825
Exercise of stock options, shares								647,177
Issuance of common stock in connection with the acquisition					1,633												1,633
Issuance of common stock in connection with the acquisition, shares												329,344
Exercise of SARs								253,882
Series A convertible preferred stock dividend						59														(59)
Series A convertible preferred stock dividend, shares						5,932
Net income (loss)	4,759																			4,599		160
Foreign currency translation adjustments	(437)																	(398)				(39)
Ending balances at Dec. 31, 2013	$ 192,948					$ 1,019		$ 48					$ 255,358					$ 235		$ (63,416)	$ (96)	$ (200)
Ending balances, Shares at Dec. 31, 2013						102,054		48,216,480													29,990