ACCOUNTING POLICIES - Accelerated Share Repurchase (Details) - USD ($) $ in Thousands		1 Months Ended	12 Months Ended
	Nov. 02, 2021	Jan. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Equity
Cost of repurchased shares			$ 83,100	$ 6,595	$ 9,110
Accelerated Share Repurchase Agreement ("ASR")
Equity
Amount paid in accelerated repurchase	$ 100,000
Number of shares repurchased during the period	709,287		709,287
Cost of repurchased shares	$ 75,000		$ 75,000
Amount of unsettled forward contract classified within stockholders' equity as additional paid in capital.			$ 25,000
Accelerated Share Repurchase Agreement ("ASR") | Subsequent Event
Equity
Number of shares repurchased during the period		214,763