Note 19 - Accumulated Other Comprehensive Income ("AOCI") - Changes in Components of AOCI (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Balance	$ 10,215,162	$ 5,728,467	$ 10,110,182	$ 5,670,254
Other comprehensive income	4,260	0	4,260	0
Balance	9,971,737	$ 5,772,215	9,971,737	$ 5,772,215
Accumulated Defined Benefit Plans Adjustment Including Portion Attributable to Noncontrolling Interest [Member]
Balance			2,216
Other comprehensive income before reclassifications			4,260
Amounts reclassified from AOCI			0
Other comprehensive income			4,260
Balance	$ 6,476		$ 6,476