Segment Reporting (Tables)

3 Months Ended

Mar. 31, 2019

Segment Reporting [Abstract]

Schedule of operations by geographic segment

Net sales and operating (loss) income for the Company's reporting segments and the Company's loss before income tax expense for the three months ended March 31, 2019 and 2018 were as follows:

	Three Months Ended March 31,
	2019			2018
Net sales:
Mobile connectivity	$	32,510		$	32,749
Inertial navigation	7,462			7,352
Consolidated net sales	$	39,972		$	40,101
Operating (loss) income:
Mobile connectivity	$	(1,039	)	$	1,072
Inertial navigation	443			334
Subtotal	(596		)	1,406
Unallocated, net	(5,233		)	(4,586		)
Loss from operations	(5,829		)	(3,180		)
Net interest and other expense	(316		)	(535		)
Loss before income tax expense	$	(6,145	)	$	(3,715	)

Depreciation expense and amortization expense for the Company's reporting segments for the three months ended March 31, 2019 and 2018 were as follows:

	Three Months Ended March 31,
	2019		2018
Depreciation expense:
Mobile connectivity	$	2,145	$	1,470
Inertial navigation	286		218
Unallocated	137		265
Total consolidated depreciation expense	$	2,568	$	1,953
Amortization expense:
Mobile connectivity	$	959	$	1,097
Inertial navigation	—		—
Unallocated	—		—
Total consolidated amortization expense	$	959	$	1,097