Consolidated Statements of Changes in Stockholder's Equity (Unaudited) (Parenthetical) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Statement of Stockholders' Equity [Abstract]
Treasury stock, shares purchased (in shares)	624,932	2,478,400	4,081,132	2,742,300
Restricted stock, shares forfeited (in shares)	15,390		16,511
Repurchased shares for taxes (in shares)	11,782		11,782