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Long-Term Debt (Details) - Revolving credit facility - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Line of Credit Facility [Line Items] |  |  |
Interest incurred | $ 449 | $ 1,913 | $ 2,295
Capitalized interest |  | 534 | 563
Interest paid (net of capitalized interest) | $ 284 | $ 1,169 | $ 1,314
Weighted average interest rate |  | 2.20% | 2.20%

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- Definition Total interest costs incurred during the period and either capitalized or charged against earnings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6450988&loc=d3e26243-108391 + Details
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