Acquisitions - Purchase Price Allocation for Acquisition (Detail) $ in Thousands	Sep. 30, 2016 USD ($)
Skygistics Ltd. [Member]
Business Acquisition [Line Items]
Cash and cash equivalents	$ 383
Accounts receivable	989
Inventories	292
Other current assets	112
Property, plant and equipment	418
Deferred tax assets	90
Intangible assets	1,545
Total identifiable assets acquired	3,829
Accounts payable and accrued expenses	410
Deferred tax liabilities	433
Other liabilities	11
Total liabilities assumed	854
Net identifiable assets acquired	2,975
Goodwill	1,374
Total preliminary purchase price	4,349
WAM Technologies, LLC [Member]
Business Acquisition [Line Items]
Accounts receivable	563
Property, plant and equipment	122
Intangible assets	4,810
Total identifiable assets acquired	5,495
Accounts payable and accrued expenses	204
Deferred revenues	7,326
Total liabilities assumed	7,530
Net identifiable assets acquired	(2,035)
Goodwill	10,724
Total preliminary purchase price	$ 8,689