SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES AND PRACTICES - New Accounting Standards - Effects of Adoption (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Mar. 31, 2020	Jan. 01, 2020	Dec. 31, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Adjustment to stockholders' equity	$ (218,936)	$ (227,429)		$ (436,670)	$ (447,099)	$ (436,217)	$ (457,100)
Property, plant and equipment, net	181,310			191,951
Other noncurrent assets	9,804			4,426
Accounting Standards Update 2018-15
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Property, plant and equipment, net			$ (4,900)
Other current assets			900
Other noncurrent assets			$ 4,000
Retained Earnings (Deficit)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Adjustment to stockholders' equity	$ 165,616	$ 152,088		(48,673)	$ (62,881)	$ (56,455)	(81,450)
Cumulative Effect, Period of Adoption, Adjustment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Adjustment to stockholders' equity				1,034			767
Cumulative Effect, Period of Adoption, Adjustment | Retained Earnings (Deficit)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Adjustment to stockholders' equity				$ 1,034			$ 767