Accrued Liabilities (Tables)

12 Months Ended

Dec. 31, 2013

Payables And Accruals [Abstract]

Components of Accrued Liabilities

The Company’s accrued liabilities consisted of the following:

	December 31,
	2013		2012
Accrued compensation and benfits	$	3,438	$	3,092
Warranty		2,199		2,762
Corporate income tax payable		81		843
Contingent earn-out amount		24		320
AIS deployment and license agreement		192		216
Accrued satellite network and other equipment		212		1,559
Other accrued expenses		3,681		2,479
	$	9,827	$	11,271

Summary of Accrued Warranty Obligations

For the years ended December 31, 2013 and 2012, changes in accrued warranty obligations consisted of the following:

	December 31,
	2013			2012
Balance at January 1,	$	2,762		$	2,631
Warranty liabilites assumed from acquisitions		300			993
Amortization of fair value adjustment of warranty liabilities acquired through acquisitions		(47	)		(200	)
Warranty expense		394			64
Warranty charges		(1,210	)		(726	)
Balance at December 31,	$	2,199		$	2,762