Segment Reporting (Tables)

9 Months Ended

Sep. 30, 2021

Segment Reporting [Abstract]

Schedule of operations by geographic segment

Net sales and operating income (loss) for the Company's reporting segments and the Company's income (loss) before income tax expense (benefit) for the three and nine months ended September 30, 2021 and 2020 were as follows:

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2021		2020		2021		2020
Net sales:
Mobile connectivity	$	34,388	$	31,383	$	98,650	$	89,465
Inertial navigation	8,596		9,729		29,989		25,141
Consolidated net sales	$	42,984	$	41,112	$	128,639	$	114,606
Operating income (loss):
Mobile connectivity	$	1,545	$	2,285	$	1,728	$	570
Inertial navigation	314		1,408		3,049		741
Subtotal	1,859		3,693		4,777		1,311
Unallocated, net	(5,088)		(4,196)		(17,415)		(12,898)
Loss from operations	(3,229)		(503)		(12,638)		(11,587)
Net interest and other income (expense)	7,263		(143)		6,896		1,721
Income (loss) before income tax expense (benefit)	$	4,034	$	(646)	$	(5,742)	$	(9,866)

Depreciation expense and amortization expense for the Company's reporting segments for the three and nine months ended September 30, 2021 and 2020 were as follows:

	Three Months Ended				Nine Months Ended
	September 30,				September 30,
	2021		2020		2021		2020
Depreciation expense:
Mobile connectivity	$	2,963	$	2,160	$	8,263	$	6,159
Inertial navigation	397		318		1,165		934
Unallocated	172		146		511		444
Total consolidated depreciation expense	$	3,532	$	2,624	$	9,939	$	7,537
Amortization expense:
Mobile connectivity	$	277	$	251	$	833	$	740
Inertial navigation	—		—		—		—
Unallocated	—		—		—		—
Total consolidated amortization expense	$	277	$	251	$	833	$	740