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Note 5 - Income Taxes (Details) - Reconciliation of Statutory Federal Income Tax Rate to Annual Tax Provision (Benefit) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Reconciliation of Statutory Federal Income Tax Rate to Annual Tax Provision (Benefit) [Abstract] |  |  |
Computed “statutory” benefit (provision) | $ 12,224 | $ (8,342) | $ (81,600)
Computed “statutory” benefit (provision) | 35.00% | 35.00% | 35.00%
Percentage depletion | 3,946 | 5,575 | 13,751
Percentage depletion | 11.00% | (24.00%) | (6.00%)
Change in valuation allowance other than utilization | (3,870) | (3,837) | (3,822)
Change in valuation allowance other than utilization | (11.00%) | 16.00% | 2.00%
State taxes, net of federal taxes | 720 | (1,110) | (10,890)
State taxes, net of federal taxes | 2.00% | 5.00% | 5.00%
Transaction costs | (1,743) |  |
Transaction costs | (5.00%) |  |
Foreign currency translation of monetary assets | 3,445 |  |
Foreign currency translation of monetary assets | 10.00% |  |
Rate differential on foreign earnings | (4,255) | (780) | (634)
Rate differential on foreign earnings | (12.00%) | 3.00% |
Other | (672) | (385) | 1,217
Other | (2.00%) | 2.00% | (1.00%)
| $ 9,795 | $ (8,879) | $ (81,978)
| 28.00% | 37.00% | 35.00%

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- Definition Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32698-109319 Reference 3: 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)(2)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 08 -Paragraph h -Subparagraph 2 -Article 4 + Details
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- Definition Percentage of domestic federal statutory tax rate applicable to pretax income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32687-109319 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 6.I) -URI http://asc.fasb.org/extlink&oid=34349781&loc=d3e330036-122817 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32698-109319 + Details
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