Note 2 - Acquisitions - Preliminary Price Allocation (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Dec. 31, 2021
Goodwill	$ 1,388,051	$ 1,409,674
Acquisition of Deep Sea [Member]
Accounts receivable		9,574
Inventories		9,970
Prepaid expenses and other assets		1,181
Property and equipment		8,838
Intangible assets		174,270
Goodwill	$ 263,604	263,604
Deferred income taxes		0
Other assets		151
Total assets acquired		467,588
Accounts payable		8,998
Accrued wages and employee benefits		2,106
Other accrued liabilities		1,737
Short-term borrowings		0
Current portion of long-term debt		0
Deferred income taxes liability		33,957
Other long-term liabilities		90
Long-term borrowings and finance lease obligations		0
Net assets acquired		420,700
ecobee Inc. [Member]
Accounts receivable		23,337
Inventories		7,258
Prepaid expenses and other assets		5,689
Property and equipment		3,588
Intangible assets		555,400
Goodwill		243,346
Deferred income taxes		46,721
Other assets		11,722
Total assets acquired		897,061
Accounts payable		25,968
Accrued wages and employee benefits		1,354
Other accrued liabilities		19,898
Short-term borrowings		0
Current portion of long-term debt		0
Deferred income taxes liability		80,447
Other long-term liabilities		33,762
Long-term borrowings and finance lease obligations		0
Net assets acquired		735,632
All Other 2021 Acquisitions [Member]
Accounts receivable		13,852
Inventories		7,034
Prepaid expenses and other assets		6,594
Property and equipment		480
Intangible assets		81,171
Goodwill		80,871
Deferred income taxes		6,547
Other assets		8,526
Total assets acquired		205,075
Accounts payable		7,473
Accrued wages and employee benefits		872
Other accrued liabilities		18,258
Short-term borrowings		800
Current portion of long-term debt		233
Deferred income taxes liability		19,930
Other long-term liabilities		7,862
Long-term borrowings and finance lease obligations		1,624
Net assets acquired		148,023
The 2021 Acquisitions [Member]
Accounts receivable		46,763
Inventories		24,262
Prepaid expenses and other assets		13,464
Property and equipment		12,906
Intangible assets		810,841
Goodwill		587,821
Deferred income taxes		53,268
Other assets		20,399
Total assets acquired		1,569,724
Accounts payable		42,439
Accrued wages and employee benefits		4,332
Other accrued liabilities		39,893
Short-term borrowings		800
Current portion of long-term debt		233
Deferred income taxes liability		134,334
Other long-term liabilities		41,714
Long-term borrowings and finance lease obligations		1,624
Net assets acquired		$ 1,304,355