Acquisitions - Purchase Price Allocation for Acquisition (Detail) - USD ($) $ in Thousands	Oct. 02, 2017	Jun. 09, 2017
Blue Tree Systems Limited [Member] | ORBCOMM Technology Ireland Limited [Member]
Business Acquisition [Line Items]
Cash	$ 656
Accounts receivable	2,335
Inventories	1,395
Prepaid expenses and other current assets	992
Property, plant and equipment	72
Intangible assets	12,020
Total identifiable assets acquired	17,470
Accounts payable	4,124
Accrued expenses	778
Deferred tax liability	1,503
Total liabilities assumed	6,405
Net identifiable assets acquired	11,065
Goodwill	26,042
Total purchase price	$ 37,107
Inthinc [Member]
Business Acquisition [Line Items]
Accounts receivable		$ 2,652
Inventories		906
Prepaid expenses and other current assets		112
Property, plant and equipment		258
Lease receivable		5,067
Intangible assets		16,000
Total identifiable assets acquired		24,995
Accounts payable		4,613
Accrued expenses		275
Other current and non-current liabilities		1,326
Total liabilities assumed		6,214
Net identifiable assets acquired		18,781
Goodwill		26,054
Total purchase price		$ 44,835