Note 14 - Stockholders' Equity (Tables)

3 Months Ended

Mar. 31, 2022

Notes Tables

Schedule of Stockholders Equity [Table Text Block]

As of March 31, 2022 and December 31, 2021
Class of Preferred Stock	Shares Authorized		Shares Issued and Outstanding		Liquidation Preference (in thousands)		Dividend Rate			Annual Dividend per Depositary Share		Par Value		Optional Redemption Date
Class L		10,350		9,000	$	225,000		5.125	%	$	1.28125	$	1.00	8/16/2022
Class M		10,580		10,580		264,500		5.250	%	$	1.31250	$	1.00	12/20/2022
				19,580	$	489,500

Dividends Declared [Table Text Block]

	Three Months Ended March 31,
	2022		2021
Common Shares	$	0.19000	$	0.17000
Class L Depositary Shares	$	0.32031	$	0.32031
Class M Depositary Shares	$	0.32813	$	0.32813