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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 | Mar. 31, 2023 | Dec. 31, 2022 | Sep. 30, 2022 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Payments to Acquire Businesses, Net of Cash Acquired |  |  |  |  |  |  |  | $ 15,974 | $ 25,065 | $ 713,471
Goodwill, Ending Balance |  |  |  |  |  | $ 1,400,880 |  | 1,432,384 | 1,400,880 | 1,409,674
Business Combination, Contingent Consideration, Liability |  |  |  |  |  | 81,533 |  | 38,937 | 81,533 |
Payment for Contingent Consideration Liability, Financing Activities |  |  |  |  |  |  |  | 4,979 | 16,135 | 3,750
EEC and Blue Pillar [Member] |  |  |  |  |  |  |  |  |  |
Payments to Acquire Businesses, Net of Cash Acquired |  |  |  |  |  |  |  | 27,658 | 25,654 |
Acquisition of Deep Sea [Member] |  |  |  |  |  |  |  |  |  |
Payments to Acquire Businesses, Net of Cash Acquired |  |  |  | $ 420,700 |  |  |  |  |  |
Business Acquisition, Purchase Price Allocation, Intangible Assets Including Goodwill |  |  |  | 437,874 |  |  |  |  |  |
Goodwill, Ending Balance |  |  |  | $ 263,604 |  |  |  |  |  | 263,604
Acquisition of Chilicon [Member] |  |  |  |  |  |  |  |  |  |
Business Acquisition, Purchase Price Allocation, Intangible Assets Including Goodwill |  |  | $ 70,174 |  |  |  |  |  |  |
Goodwill, Ending Balance |  |  | 36,974 |  |  |  |  |  |  |
Business Combination, Consideration Transferred, Total |  |  | $ 61,129 |  |  |  |  |  |  |
Contingent Consideration, Share Payments, Value |  |  |  |  |  |  |  | 4,286 |  |
Acquisition of Off Grid Energy [Member] |  |  |  |  |  |  |  |  |  |
Payments to Acquire Businesses, Net of Cash Acquired |  | $ 56,949 |  |  |  |  |  |  |  |
Business Acquisition, Purchase Price Allocation, Intangible Assets Including Goodwill |  | 56,076 |  |  |  |  |  |  |  |
Goodwill, Ending Balance |  | 21,531 |  |  |  |  |  |  |  |
Business Combination, Contingent Consideration, Liability |  | $ 29,054 |  |  |  |  |  |  |  |
Payment for Contingent Consideration Liability, Financing Activities |  |  |  |  |  |  | $ 16,135 |  |  |
ecobee Inc. [Member] |  |  |  |  |  |  |  |  |  |
Business Acquisition, Purchase Price Allocation, Intangible Assets Including Goodwill |  |  |  |  |  |  |  |  |  | 806,131
Goodwill, Ending Balance |  |  |  |  |  |  |  |  |  | 248,231
Business Combination, Consideration Transferred, Total | $ 735,577 |  |  |  |  |  |  |  |  |
Payment for Contingent Consideration Liability, Financing Activities |  |  |  |  | $ 479 | 542 |  | 479 |  |
Contingent Consideration, Share Payments, Value |  |  |  |  | $ 45,000 | $ 47,123 |  | 44,521 |  |
Contingent Consideration, Share Payment, Shares (in shares) |  |  |  |  | 466,188 | 196,531 |  |  |  |
Other 2021 Acquisitions [Member] |  |  |  |  |  |  |  |  |  |
Payments to Acquire Businesses, Net of Cash Acquired |  |  |  |  |  |  |  |  |  | 29,945
All Acquisitions [Member] |  |  |  |  |  |  |  |  |  |
Proforma Amortization of Intangible Assets |  |  |  |  |  |  |  | $ 111 | $ 2,465 | $ 70,152

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