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CONSOLIDATED STATEMENTS OF CASH FLOWS (Parenthetical) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Supplemental Disclosures of Cash Flow Information Cash payments for: |  |  |
Capitalized interest | $ 1,556 | $ 1,559 | $ 1,374

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