Note 14 - Stockholders' Equity (Tables)

9 Months Ended

Sep. 30, 2020

Notes Tables

Schedule of Stockholders Equity [Table Text Block]

As of September 30, 2020 and December 31, 2019
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 September 30,				Nine Months Ended September 30,
	2020		2019		2020		2019
Common Shares (1)	$	0.10000	$	0.28000	$	0.38000	$	0.84000
Class I Depositary Shares (2)	$	-	$	0.24583	$	-	$	0.99583
Class J Depositary Shares (2)	$	-	$	0.34375	$	-	$	1.03125
Class K Depositary Shares (2)	$	-	$	0.23047	$	-	$	0.93359
Class L Depositary Shares	$	0.32031	$	0.32031	$	0.96093	$	0.96093
Class M Depositary Shares	$	0.32813	$	0.32813	$	0.98439	$	0.98439