NATURE OF OPERATIONS, CONSOLIDATION AND PRESENTATION OF FINANCIAL STATEMENTS - Recently Issued Accounting Pronouncements (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2019	Jan. 01, 2019	Dec. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred tax assets		$ 21,427		$ 35,794
Retained earnings		246,383		119,550
Operating lease liabilities		83,900
Operating lease ROU assets		$ 84,791		$ 0
ASU 2016-09 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Tax benefit from stock options exercised and restricted stock vesting	$ 3,200
ASU 2016-09 [Member] | Restatement Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Deferred tax assets	400
Retained earnings	$ 400
ASU 2016-02 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease liabilities			$ 80,000
Operating lease ROU assets			$ 80,000