STOCKHOLDERS' EQUITY Common Stock Repurchases (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020	Oct. 26, 2021	Apr. 27, 2021	Dec. 31, 2020
Stockholders' Equity [Line Items]
Stock Repurchase Program, Remaining Authorized Repurchase Amount	$ 55.1		$ 55.1				$ 41.3
Stock Repurchase Program, Authorized Amount						$ 50.0
Repurchase of common stock (shares)	120,000	0	455,000	64,000
Repurchase of common stock			$ 36.2
Subsequent event
Stockholders' Equity [Line Items]
Stock Repurchase Program, Authorized Amount					$ 50.0