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Note 3 - Income Taxes | 3 Months Ended
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Mar. 31, 2016
Notes to Financial Statements |
Income Tax Disclosure [Text Block] | Note 3. Income Taxes Major components of our income tax provision for the three months ended March 31, 2016 and 2015 are as follows (in thousands):
|  | Three Months Ended |
|  | March 31, |
|  | 2016 |  |  | 2015 |
Current: |  |  |  |  |  |  |  |
Domestic |  | $ | (2,506 | ) |  | $ | 97 |
Foreign |  |  | 1,015 |  |  |  | 708 |
Total current income tax (benefit) provision |  |  | (1,491 | ) |  |  | 805 |
Deferred: |  |  |  |  |  |  |  |
Domestic |  |  | 588 |  |  |  | 2,422 |
Foreign |  |  | 2,557 |  |  |  | (1,788 | )
Total deferred income tax provision (benefit) |  |  | 3,145 |  |  |  | 634 |
Total income tax provision |  | $ | 1,654 |  |  | $ | 1,439 |
As of March 31, 2016 , we have a net deferred tax asset in the U.S. of $42.3 million, a net deferred tax liability in Canada of $127.1 million, and a net deferred tax asset in Mexico of $7.9 million, for a consolidated worldwide net deferred tax liability of $76.9 million. Our ability to utilize our deferred tax assets depends on future taxable income generated from operations. For the three months ended March 31, 2016 , there were no circumstances that caused us to change our assessment of the ability to generate sufficient future taxable income to realize the currently recognized deferred tax assets. At March 31, 2016 and December 31, 2015 , the balances of the valuation allowances on our deferred tax assets were $113 million and $116 million, respectively, primarily for net operating losses and tax credit carryforwards. The amount of the deferred tax asset considered recoverable, however, could be reduced in the near term if estimates of future taxable income are reduced. The current income tax provisions for the three months ended March 31, 2016 and 2015 vary from the amounts that would have resulted from applying the statutory income tax rate to pre-tax income due primarily to the effects of percentage depletion for all periods presented and the impact of taxation in foreign jurisdictions.

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- 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 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32559-109319 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32718-109319 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32639-109319 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32537-109319 + Details
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