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FAIR VALUE MEASUREMENTS - Estimated FV (Details) - 6.75% senior notes due 2025 - USD ($) $ in Thousands		Sep. 30, 2019		Aug. 02, 2019	Dec. 31, 2018		Sep. 07, 2017	Feb. 16, 2017
Fair value measurements
Interest rate (as a percent)		6.75%		6.75%	6.75%			6.75%
Principal amount		$ 625,005	[1]		$ 625,005	[1]	$ 850,000	$ 850,000
Total
Fair value measurements
Estimated fair value of debt	[1]	$ 60,963			$ 458,210
[1] The Company’s 6.75% senior notes due 2025 were cancelled on the Effective Date. See Note 2, “Reorganization,” for further details.

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- Definition

Face (par) amount of debt instrument at time of issuance.

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- Definition

Contractual interest rate for funds borrowed, under the debt agreement.

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The fair value amount of long-term debt whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission.

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