CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (Parenthetical) - $ / shares	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Common stock dividend (in dollars per share)	$ 0.06	$ 0.06	$ 0.09	$ 0.09
Preferred stock dividend (in dollars per share)	$ 0.62
Accounting Standards Update [Extensible List]					us-gaap:AccountingStandardsUpdate201613Member
Series B Preferred Stock
Preferred stock dividend (in dollars per share)		$ 1.08	$ 1.49	$ 2.20