XML 32 R17.htm IDEA: XBRL DOCUMENT
v3.10.0.1

INCOME TAXES | 6 Months Ended
--- | ---
Jun. 30, 2018
Income Tax Disclosure [Abstract] |
Income Taxes | NOTE 11 - INCOME TAXES Our 2018 estimated annual effective tax rate before discrete items is approximately 0.1%. The annual effective tax rate differs from the U.S. statutory rate of 21.0% primarily due to the deductions for percentage depletion in excess of cost depletion related to U.S. operations and the reversal of valuation allowance from operations in the current year. The 2017 estimated annual effective tax rate before discrete items at June 30, 2017 was negative 3.6%. For the three and six months ended June 30, 2018, we recorded discrete items that resulted in an income tax benefit of $2.0 million and an expense of $13.7 million, respectively. The $2.0 million benefit relates to the reversal of a reserve for uncertain tax positions due to a lapse in the statute of limitations. The $13.7 million expense relates primarily to a $14.5 million reduction of the refundable AMT credit recorded in Income tax receivable in our Statements of Unaudited Condensed Consolidated Financial Position based on the sequestration guidance issued by the Internal Revenue Service during the first quarter of 2018. The $14.5 million current year expense is a reduction of an asset and will not result in a cash tax outlay. For the three and six months ended June 30, 2017, we recorded discrete items that resulted in an expense of $0.3 million and $0.2 million, respectively.

X
- References No definition available. + Details
Name: | us-gaap_IncomeTaxDisclosureAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -URI http://asc.fasb.org/topic&trid=2144680 + Details
Name: | us-gaap_IncomeTaxDisclosureTextBlock
Namespace Prefix: | us-gaap_
Data Type: | nonnum:textBlockItemType
Balance Type: | na
Period Type: | duration