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Debt Schedule of Long-Term Debt Repayments (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Debt Instrument [Line Items] |  |  |
Repayments of Long-term Debt | $ 79,119 | $ 62,998 | $ 102,438
Line of Credit [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Repayments of Long-term Debt | 67,869 | 49,873 | 76,188
USD Denominated Term Loan [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Repayments of Long-term Debt | 11,250 | 13,125 | 26,250
Secured Debt [Member] |  |  |
Debt Instrument [Line Items] |  |  |
Repayments of Long-term Debt | $ 79,119 | $ 62,998 | $ 102,438

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- Definition The cash outflow for debt initially having maturity due after one year or beyond the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 15 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3291-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Financing Activities -URI http://asc.fasb.org/extlink&oid=6513228 + Details
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