CONSOLIDATED STATEMENT OF STOCKHOLDERS' EQUITY (Parenthetical) - $ / shares		1 Months Ended		12 Months Ended
	Mar. 31, 2019	Oct. 31, 2019	Apr. 30, 2019	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Statement of Stockholders' Equity [Abstract]
Cash dividends, per share (in dollars per share)	$ 0.07	$ 0.10	$ 0.09	$ 0.35	$ 0.25	$ 0.17