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Supplemental Cash Flow Information (Details) - USD ($) | 12 Months Ended
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Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Supplemental Cash Flow Information [Abstract] |  |  |
Estimated federal income taxes paid | $ 0 | $ 0 | $ 3,000,000
Income Taxes Receivable |  | 3,251,000 |
Cash paid for state income taxes | 211,000 | 172,000 | 516,000
Foreign withholding taxes | $ 4,421,000 | $ 5,159,000 | $ 4,605,000

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- Definition Cash paid for state income taxes during the period. + References No definition available. + Details
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- Definition Estimated federal income taxes paid + References No definition available. + Details
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- Definition Foreign withholding taxes + References No definition available. + Details
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- Definition Carrying amount as of the balance sheet date of income taxes previously overpaid to tax authorities (such as U.S. Federal, state and local tax authorities) representing refunds of overpayments or recoveries based on agreed-upon resolutions of disputes. Also called income tax refund receivable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.8) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 8 -Article 5 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 5 -Subparagraph c -Article 7 + Details
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- References No definition available. + Details
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