Segment Reporting (Tables)

12 Months Ended

Dec. 31, 2013

Segment Reporting [Abstract]

Schedule of operations by geographic segment

	Sales Originating From
Year ended December 31, 2011	North America			Europe			Total
Mobile communication sales to the United States	$	50,797		$	—		$	50,797
Mobile communication sales to Canada	875			—			875
Mobile communication sales to Europe	438			13,244			13,682
Mobile communication sales to other geographic areas	1,280			3,568			4,848
Guidance and stabilization sales to the United States	11,951			—			11,951
Guidance and stabilization sales to Canada	16,643			—			16,643
Guidance and stabilization sales to Europe	7,877			—			7,877
Guidance and stabilization sales to other geographic areas	5,863			—			5,863
Intercompany sales	7,793			1,084			8,877
Subtotal	103,517			17,896			121,413
Eliminations	(7,793		)	(1,084		)	(8,877		)
Net sales	$	95,724		$	16,812		$	112,536
Segment net income	$	396		$	464		$	860
Depreciation and amortization	$	3,948		$	426		$	4,374
Total assets	$	112,557		$	15,999		$	128,556

The following table summarizes information regarding the Company’s operations by geographic segment:

	Sales Originating From
Year ended December 31, 2013	Americas			Europe and Asia			Total
Mobile communication sales to the United States	$	78,729		$	1,099		$	79,828
Mobile communication sales to Canada	462			39			501
Mobile communication sales to Europe	455			18,571			19,026
Mobile communication sales to other geographic areas	3,596			5,200			8,796
Guidance and stabilization sales to the United States	7,892			—			7,892
Guidance and stabilization sales to Canada	13,810			—			13,810
Guidance and stabilization sales to Europe	7,421			—			7,421
Guidance and stabilization sales to other geographic areas	25,014			—			25,014
Intercompany sales	3,465			2,184			5,649
Subtotal	140,844			27,093			167,937
Eliminations	(3,465		)	(2,184		)	(5,649		)
Net sales	$	137,379		$	24,909		$	162,288
Segment net income (loss)	$	5,260		$	(727	)	$	4,533
Depreciation and amortization	$	4,521		$	1,473		$	5,994
Total assets	$	136,051		$	47,798		$	183,849

	Sales Originating From
Year ended December 31, 2012	Americas			Europe and Asia			Total
Mobile communication sales to the United States	$	62,857		$	—		$	62,857
Mobile communication sales to Canada	777			—			777
Mobile communication sales to Europe	417			15,255			15,672
Mobile communication sales to other geographic areas	3,936			4,443			8,379
Guidance and stabilization sales to the United States	8,632			—			8,632
Guidance and stabilization sales to Canada	10,736			—			10,736
Guidance and stabilization sales to Europe	11,793			—			11,793
Guidance and stabilization sales to other geographic areas	18,266			—			18,266
Intercompany sales	8,485			2,064			10,549
Subtotal	125,899			21,762			147,661
Eliminations	(8,485		)	(2,064		)	(10,549		)
Net sales	$	117,414		$	19,698		$	137,112
Segment net income (loss)	$	4,316		$	(736	)	$	3,580
Depreciation and amortization	$	4,116		$	494		$	4,610
Total assets	$	118,076		$	19,492		$	137,568