CONDENSED CONSOLIDATED STATEMENTS OF SHAREHOLDERS' EQUITY (Unaudited) (Parenthetical) - $ / shares	3 Months Ended	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Jun. 30, 2019	Mar. 31, 2019
Dividends declared and paid (in dollars per share)	$ 1	$ 1
Minimum [Member]
Stock issued for cash, net (in dollars per share)			$ 4.00	$ 6.02	$ 5.05
Maximum [Member]
Stock issued for cash, net (in dollars per share)			$ 4.96	$ 6.49	$ 5.42