Acquisitions (Details) - Exaxe Limited [Member] $ in Thousands	Nov. 27, 2018 USD ($)
Recognized amount of identifiable assets acquired and liabilities assumed
Cash	$ 297
Accounts receivable	968
Prepaid expenses and other current assets	498
Property, plant and equipment	42
Trade name	364
Customer relationships	1,658
Technology	7,314
Deferred tax asset from prior net operating losses	167
Accounts payable and other liabilities	(883)
Deferred revenue	(86)
Total fair value of identifiable net assets acquired	10,339
Total purchase consideration	12,329
Goodwill	$ 1,990