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Condensed Consolidated Statements of Cash Flows (Unaudited) (Parentheticals) (USD $) In Thousands, unless otherwise specified | 3 Months Ended
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Mar. 31, 2015 | Mar. 31, 2014
Cash paid for capitalized interest | $ 1,134 us-gaap_InterestPaidCapitalized | $ 297 us-gaap_InterestPaidCapitalized

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- Definition The amount of cash paid during the current period for interest that is capitalized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 13 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3213-108585 + Details
Name: | us-gaap_InterestPaidCapitalized
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration