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Note 3 - Acquisitions (Details Textual) - USD ($) $ in Thousands								3 Months Ended		12 Months Ended
	Dec. 01, 2021	Sep. 01, 2021	Jul. 02, 2021	Jun. 01, 2021	Oct. 07, 2020	Apr. 26, 2019	Mar. 12, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Payments to Acquire Businesses, Net of Cash Acquired, Total										$ 713,471	$ 64,797	$ 112,001
Goodwill, Ending Balance										1,409,674	855,228	805,284
Business Combination, Contingent Consideration, Liability, Total										146,759	5,888
Acquisition of Deep Sea [Member]
Payments to Acquire Businesses, Net of Cash Acquired, Total				$ 420,700
Business Acquisition, Purchase Price Allocation, Intangible Assets Including Goodwill				437,864
Goodwill, Ending Balance				$ 266,427						266,427
Acquisition of Chilicon [Member]
Business Acquisition, Purchase Price Allocation, Intangible Assets Including Goodwill			$ 69,992
Goodwill, Ending Balance			37,492
Business Combination, Consideration Transferred, Total			$ 61,129
Acquisition of Off Grid Energy [Member]
Payments to Acquire Businesses, Net of Cash Acquired, Total		$ 53,438
Business Acquisition, Purchase Price Allocation, Intangible Assets Including Goodwill		52,565
Goodwill, Ending Balance		18,020
Business Combination, Contingent Consideration, Liability, Total		$ 29,054
ecobee Inc. [Member]
Business Acquisition, Purchase Price Allocation, Intangible Assets Including Goodwill	$ 795,613
Goodwill, Ending Balance	231,213									231,213
Business Combination, Consideration Transferred, Total	$ 734,638
Other 2021 Acquisitions [Member]
Payments to Acquire Businesses, Net of Cash Acquired, Total										30,086
Acquisition of Enbala [Member]
Payments to Acquire Businesses, Net of Cash Acquired, Total					$ 41,982
Business Acquisition, Purchase Price Allocation, Intangible Assets Including Goodwill					46,338
Goodwill, Ending Balance					$ 27,038
Other 2020 Acquisitions [Member]
Payments to Acquire Businesses, Net of Cash Acquired, Total								$ 22,958
Pika [Member]
Payments to Acquire Businesses, Net of Cash Acquired, Total						$ 49,068
Business Acquisition, Purchase Price Allocation, Intangible Assets Including Goodwill						58,196
Goodwill, Ending Balance						$ 19,896
Neurio [Member]
Payments to Acquire Businesses, Net of Cash Acquired, Total							$ 59,071		$ 7,922
Business Acquisition, Purchase Price Allocation, Intangible Assets Including Goodwill							58,762
Goodwill, Ending Balance							$ 17,862
All Acquisitions [Member]
Proforma Amortization of Intangible Assets										$ 63,524,000	$ 78,840,000	$ 83,100,000

X

- Definition

The amount of acquisition cost of a business combination allocated to an identifiable intangible asset including goodwill.

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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Amount of liability recognized arising from contingent consideration in a business combination.

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