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The cash outflow to reacquire common stock during the period.

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Amount of stock repurchase plan authorized.

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Amount remaining of a stock repurchase plan authorized.

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Number of previously issued common shares repurchased by the issuing entity and held in treasury.

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Number of shares that have been repurchased during the period and are being held in treasury.

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STOCKHOLDERS' EQUITY - Treasury Stock (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Jan. 28, 2021	Oct. 31, 2015
Treasury Stock
Aggregate cost of shares repurchased during the period	$ 6,595	$ 9,110	$ 9,404
Treasury stock (in shares)	3,656,938	3,404,639
Stock Repurchase Program
Treasury Stock
Amount of stock repurchases authorized					$ 50,000
Number of shares repurchased during the period	252,299
Aggregate cost of shares repurchased during the period	$ 6,600
Amount available for repurchase	$ 6,600
Stock Repurchase Program \| Subsequent Event
Treasury Stock
Amount of stock repurchases authorized				$ 50,000