EQUITY AND MEZZANINE EQUITY - Share Repurchase Program (Details) - Share Repurchase Program - USD ($) $ / shares in Units, $ in Thousands	8 Months Ended	12 Months Ended
Dec. 31, 2018	Dec. 31, 2019	Apr. 30, 2018
Equity, Class of Treasury Stock [Line Items]
Number of Shares (in shares)	42,000	329,000	178,000
Aggregate Cost	$ 2,200	$ 18,023	$ 9,900
Average Price Per Share (in dollars per share)	$ 51.56	$ 54.69	$ 55.82

Equity impact of the value of stock that has been repurchased and retired during the period. The excess of the purchase price over par value can be charged against retained earnings (once the excess is fully allocated to additional paid in capital).

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Period Type:	duration