ACCOUNTING POLICIES (Policies)	9 Months Ended
ACCOUNTING POLICIES (Policies)	Sep. 30, 2020
Accounting Policies [Abstract]
Fair value of financial instruments	Fair value of financial instruments The Company records all financial instruments, including cash and cash equivalents, accounts receivable, notes receivable, accounts payable, other accruals, and notes payable at cost, which approximates fair value due to their short term or stated rates. Investments in marketable equity securities are recorded at fair value. The 6.50% senior secured notes due 2023 (senior secured notes) were carried at a cost of $396.6 million at September 30, 2020. The fair value of the senior secured notes at September 30, 2020, as obtained through an independent pricing source, was approximately $300.3 million.
New Accounting Pronouncements and Changes in Accounting Principles [Text Block]	New accounting standards Recently adopted accounting standards In June 2016, the Financial Accounting Standards Board (the FASB) issued Accounting Standards Update (ASU) No. 2016-13, "Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments", which amends the current accounting guidance and requires the measurement of all expected losses based on historical experience, current conditions and reasonable and supportable forecasts. For trade receivables, loans, and other financial instruments, we are required to use a forward-looking expected loss model that reflects losses that are probable rather than the incurred loss model for recognizing credit losses. The standard became effective for interim and annual periods beginning after December 15, 2019. In addition, the FASB issued ASU 2019-04, Codification Improvements to Topic 326, which provides clarity on certain aspects of the amendments in ASU 2016-13. The Company adopted this guidance prospectively on January 1, 2020 and it did not have a material effect on the Company's condensed consolidated financial statements. In August 2018, the FASB issued ASU No. 2018-13, "Disclosure Framework - Changes to the Disclosure Requirements for Fair Value Measurement." The amendments in this update modify the disclosure requirements on fair value measurements in Topic 820, Fair Value Measurement. The amendments in this update are effective for fiscal years beginning after December 15, 2019. We adopted this ASU on January 1, 2020 and it did not have a material effect on the Company's condensed consolidated financial statements. Accounting standards issued but not yet adopted In August 2018, the FASB issued ASU No. 2018-14, "Disclosure Framework - Changes to the Disclosure Requirements for Defined Benefit Plans." The amendments in this update modify the disclosure requirements for employers that sponsor defined benefit pension or other postretirement plans. The amendments in this update are effective for fiscal years ending after December 15, 2020. The adoption of this guidance is not expected to have a material effect on the Company's condensed consolidated financial statements. In March 2020, the SEC issued a final rule that amends the disclosure requirements related to certain registered securities under SEC Regulation S-X Rule 3-10 with respect to the disclosure requirements related to issuers and guarantors of guaranteed debt securities. The final rule allows registrants to provide alternative financial disclosures in either the registrant’s MD&A or financial statements, rather than the previous requirement under Rule 3-10, which required condensed consolidating financial information within the financial statements. It also simplifies the requirements in Rule 3-10 that currently must be met for a parent company to qualify for exceptions allowing it to provide alternative disclosures rather than full audited financial statements. The final rule also reduces the periods for which summarized financial information is required to be presented to the most recent (1) annual period and (2) year-to-date interim period. The final rule applies to annual reports on Form 10-K for fiscal years ending after January 4, 2021 and quarterly reports on Form 10-Q for quarterly periods ending after January 4, 2021 and registrants may voluntarily comply with the final rule before the effective date. The Company does not expect the future adoption, which is limited to disclosures only, to have a material effect on the Company’s consolidated financial statements.