Segment Reporting (Tables)

12 Months Ended

Dec. 31, 2016

Segment Reporting [Abstract]

Schedule of operations by geographic segment

Net sales and operating earnings (loss) for the Company's reporting segments and the Company's loss (income) before benefit from income taxes for the years ended December 31, 2016, 2015, and 2014 were as follows:

	For the year ended December 31,
	2016			2015			2014
Net sales:
Mobile connectivity	$	141,507		$	147,809		$	129,819
Inertial navigation	34,615			36,825			42,772
Consolidated net sales	$	176,122		$	184,634		$	172,591
Operating earnings (loss):
Mobile connectivity	$	10,041		$	9,459		$	5,056
Inertial navigation	5,272			7,934			10,431
Subtotal	15,313			17,393			15,487
Unallocated, net	(16,635		)	(14,185		)	(13,565		)
Consolidated operating earnings	(1,322		)	3,208			1,922
Net interest and other expense	(648		)	(542		)	(597		)
(Loss) income before income tax expense	$	(1,970	)	$	2,666		$	1,325

Depreciation expense and amortization expense for the Company's segments are presented in the table that follows for the periods presented:

	For the year ended December 31,
	2016	2015	2014
Depreciation expense:
Mobile connectivity	6,084	5,843	4,827
Inertial navigation	1,063	961	935
Unallocated	461	389	365
Total consolidated depreciation expense	7,608	7,193	6,127
Amortization expense:
Mobile connectivity	4,956	5,526	3,859
Inertial navigation	—	—	—
Unallocated	—	—	—
Total consolidated amortization expense	4,956	5,526	3,859