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STOCKHOLDERS' EQUITY - Treasury Stock (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jan. 28, 2021	Dec. 31, 2020
Treasury Stock
Aggregate cost of shares repurchased during the period	$ 8,100	$ 3,162
Stock Repurchase Program
Treasury Stock
Amount of stock repurchases authorized			$ 50,000
Number of shares repurchased during the period	126,289
Aggregate cost of shares repurchased during the period	$ 8,100
Amount available for repurchase	$ 41,900			$ 6,600

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The cash outflow to reacquire common stock during the period.

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