SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES AND PRACTICES - New Accounting Standards - Effects of Adoption of Topic 842 on Condensed Consolidated Financial Statements (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Jan. 01, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease right-of-use assets	$ 67,048
Current portion of operating lease obligations	17,100
Operating lease obligations (non-current)	$ 54,436
ASU 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease right-of-use assets		$ 66,555
Current portion of operating lease obligations		17,770
Operating lease obligations (non-current)		54,477
Retained Earnings | ASU 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Decrease, net of tax, to beginning retained earnings		$ (400)