CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Parenthetical) - shares	3 Months Ended	9 Months Ended		190 Months Ended
	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020
Statement of Stockholders' Equity [Abstract]
Repurchase of common stock (in shares)	1,204,300	1,000,000	1,228,102	46,357,495