Note 14 - Stockholders' Equity (Tables)

6 Months Ended

Jun. 30, 2020

Notes Tables

Schedule of Stockholders Equity [Table Text Block]

As of June 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 June 30,				Six Months Ended June 30,
	2020		2019		2020		2019
Common Shares (1)	$	-	$	0.28000	$	0.28000	$	0.56000
Class I Depositary Shares (2)	$	-	$	0.37500	$	-	$	0.75000
Class J Depositary Shares (2)	$	-	$	0.34375	$	-	$	0.68750
Class K Depositary Shares (2)	$	-	$	0.35156	$	-	$	0.70312
Class L Depositary Shares	$	0.32031	$	0.32031	$	0.64062	$	0.64062
Class M Depositary Shares	$	0.32813	$	0.32813	$	0.65626	$	0.65626