Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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For contingent consideration arrangements recognized in connection with a business combination, this element represents an estimate of the high-end of the potential range (undiscounted) of the consideration which may be paid.

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Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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No definition available.

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Present value of lessee's discounted obligation for lease payments from operating lease, classified as noncurrent.

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Amount of lessee's right to use underlying asset under operating lease.

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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Acquisitions Details (Details) - USD ($) $ in Thousands		3 Months Ended
Acquisitions Details (Details) - USD ($) $ in Thousands	Dec. 13, 2019	Dec. 31, 2019	Sep. 30, 2019	Dec. 31, 2020
Business Acquisition [Line Items]
Operating lease right-of-use asset		$ 15,041
Operating lease liability		17,483
Opengear
Business Acquisition [Line Items]
Cash paid at closing	$ 148,058
Weighted average useful life identifiable intangibles	13 years 7 months 6 days
Opengear \| General and Administrative
Business Acquisition [Line Items]
Acquisition costs		1,900	$ 300
Earn-Out Payments \| Maximum \| Opengear
Business Acquisition [Line Items]
Earn-out payment maximum		$ 5,000
Earn-Out Payments \| Maximum \| Forecast \| Opengear
Business Acquisition [Line Items]
Earn-out payment maximum				$ 10,000
Customer Relationships \| Opengear
Business Acquisition [Line Items]
Useful life identifiable intangibles	14 years 6 months
Purchased and Core Technology \| Opengear
Business Acquisition [Line Items]
Useful life identifiable intangibles	9 years
Trademarks \| Opengear
Business Acquisition [Line Items]
Useful life identifiable intangibles	12 years
Other non-current assets \| Opengear
Business Acquisition [Line Items]
Operating lease right-of-use asset	$ 1,400
Other current and non-current liabilities \| Opengear
Business Acquisition [Line Items]
Operating lease liability	$ 1,700