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Note 8 - Debt (Details Textual) $ / shares in Units, $ in Thousands								3 Months Ended		9 Months Ended
		Mar. 05, 2021 USD ($) $ / shares	Nov. 09, 2020 USD ($)	Oct. 30, 2020 USD ($)	Oct. 01, 2019 USD ($)	Jun. 14, 2019 USD ($)	May 08, 2019 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)	May 03, 2022 USD ($)	Dec. 31, 2021 USD ($)
Letters of Credit Outstanding, Amount								$ 44,100		$ 44,100
Proceeds from Issuance of Long-term Debt, Total										0	$ 1,695,850
Amortization of Debt Issuance Costs								1,300	$ 1,400	4,000	4,300
Financial Standby Letter of Credit [Member] | Wisper [Member]
Guarantor Obligations, Maximum Exposure, Undiscounted								44,100		44,100
Senior Unsecured Notes Due 2030 [Member]
Debt Instrument, Face Amount			$ 650,000
Long-term Debt, Gross								650,000		650,000			$ 650,000
Debt Instrument, Interest Rate, Stated Percentage			4.00%
Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed			100.00%
Debt Instrument, Redemption Price, Percentage of Principal Amount Redeemed not Exceeding the Net Cash Proceeds from One or More Equity Offerings at a Redemption Price Equal to 104% of the Principal Amount			40.00%
Debt Instrument, Covenant Repurchase, Percentage of Principle			101.00%
The 2026 Notes [Member]
Debt Instrument, Face Amount		$ 575,000
Long-term Debt, Gross								575,000		575,000			575,000
Debt Instrument, Interest Rate, Stated Percentage		0.00%
Amortization of Debt Issuance Costs								21	21	61	47
The 2028 Notes [Member]
Debt Instrument, Face Amount		$ 345,000
Long-term Debt, Gross								345,000		345,000			345,000
Debt Instrument, Interest Rate, Stated Percentage		1.125%
Amortization of Debt Issuance Costs								9	9	28	21
The 2026 Notes and the 2028 Notes [Member]
Long-term Debt, Gross								920,000		$ 920,000			$ 920,000
Debt Instrument, Convertible, Conversion Ratio		0.4394								0.4394
Debt Instrument, Convertible, Conversion Price (in dollars per share) | $ / shares		$ 2,275.83
Debt Instrument, Redemption Price, Percentage		100.00%
Debt Instrument, Convertible, Threshold Percentage of Stock Price Trigger		130.00%
Debt Instrument, Convertible, Threshold Trading Days		20
Debt Instrument, Convertible, Threshold Consecutive Trading Days		30
Amortization of Debt Issuance Costs								30	$ 30	$ 89	$ 68
The 2026 Notes and the 2028 Notes [Member] | Company Undergoes a Fundamental Change [Member]
Debt Instrument, Redemption Price, Percentage		100.00%
Term Loan Borrowings [Member]
Long-term Debt, Gross								2,300,000		2,300,000
MUFG Bank [Member]
Letters of Credit Outstanding, Amount								62,900		62,900
Letter Of Credit, Maximum Borrowing Capacity												$ 75,000
Secured Debt [Member]
Debt Instrument, Face Amount								2,375,000		2,375,000
Long-term Debt, Gross								2,286,592		2,286,592
Secured Debt [Member] | Term Loan A-2 [Member]
Debt Instrument, Face Amount								700,000		700,000
Long-term Debt, Gross								646,823		$ 646,823
Proceeds from Issuance of Long-term Debt, Total					$ 450,000		$ 250,000
Long Term Debt, Amortization Rate, First Twelve Months				2.50%
Long Term Debt, Amortization Rate, Year Two				2.50%
Long Term Debt, Amortization Rate, Year Three				5.00%
Long Term Debt, Amortization Rate, Year Four				7.50%
Long Term Debt, Amortization Rate, Year Five				12.50%
Secured Debt [Member] | Term Loan A-2 [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate	[1]									1.75%
Secured Debt [Member] | Term Loan A-2 [Member] | London Interbank Offered Rate (LIBOR) [Member] | Minimum [Member]
Debt Instrument, Basis Spread on Variable Rate										1.25%
Secured Debt [Member] | Term Loan A-2 [Member] | London Interbank Offered Rate (LIBOR) [Member] | Maximum [Member]
Debt Instrument, Basis Spread on Variable Rate										1.75%
Secured Debt [Member] | Term B-2 Loan [Member]
Debt Instrument, Face Amount								250,000		$ 250,000
Long-term Debt, Gross								241,250		$ 241,250
Secured Debt [Member] | Term B-2 Loan [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate	[1]									2.00%
Secured Debt [Member] | Term B-3 Loan [Member]
Debt Instrument, Face Amount								625,000		$ 625,000
Long-term Debt, Gross								608,519		$ 608,519
Proceeds from Issuance of Long-term Debt, Total				$ 300,000		$ 325,000
Secured Debt [Member] | Term B-3 Loan [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate	[1]									2.00%
Secured Debt [Member] | Term Loan B-4 [Member]
Debt Instrument, Face Amount				800,000				800,000		$ 800,000
Long-term Debt, Gross								790,000		$ 790,000
Secured Debt [Member] | Term Loan B-4 [Member] | London Interbank Offered Rate (LIBOR) [Member]
Debt Instrument, Basis Spread on Variable Rate	[1]									2.00%
Secured Debt [Member] | CoBank, ACB [Member] | Term Loan A-2 [Member]
Debt Instrument, Face Amount				700,000
Secured Debt [Member] | CoBank, ACB [Member] | Term B-2 Loan [Member]
Debt Instrument, Face Amount				250,000
Secured Debt [Member] | CoBank, ACB [Member] | Term B-3 Loan [Member]
Debt Instrument, Face Amount				625,000
Revolving Credit Facility [Member] | JPMorgan Chase Bank [Member]
Line of Credit Facility, Maximum Borrowing Capacity				$ 500,000
Line of Credit Facility, Remaining Borrowing Capacity								455,900		$ 455,900
Letter of Credit [Member] | JPMorgan Chase Bank [Member]
Letters of Credit Outstanding, Amount								$ 44,100		$ 44,100
Line of Credit Facility, Interest Rate at Period End								1.88%		1.88%
[1] The Term Loan A-2 interest rate spread can vary between 1.25% and 1.75%, determined on a quarterly basis by reference to a pricing grid based on the Company’s Total Net Leverage Ratio. All other applicable margins are fixed.

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