SHAREHOLDERS' EQUITY - Deemed Stock Repurchase (Details) - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Stockholders' Equity Note [Abstract]
Shares of stock deemed repurchased (in shares)	510	459	506
Amount recorded as financing activity	$ 1,527	$ 2,905	$ 5,186