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Note 3 - Construction Joint Ventures (Details) - Noncontrolling Venture Partner Income (USD $) In Thousands, unless otherwise specified | 3 Months Ended
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Mar. 31, 2015 | Mar. 31, 2014
Condensed Income Statements, Captions [Line Items] |  |
Revenues | $ 117,682 us-gaap_Revenues | $ 134,538 us-gaap_Revenues
Corporate Joint Venture [Member] |  |
Condensed Income Statements, Captions [Line Items] |  |
Revenues | 13,006 us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_CorporateJointVentureMember | 19,237 us-gaap_Revenues / dei_LegalEntityAxis = us-gaap_CorporateJointVentureMember
Income before tax | 2,413 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = us-gaap_CorporateJointVentureMember | 560 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments / dei_LegalEntityAxis = us-gaap_CorporateJointVentureMember
Revenues | 4,552 us-gaap_ConstructionRevenue / dei_LegalEntityAxis = us-gaap_CorporateJointVentureMember | 8,931 us-gaap_ConstructionRevenue / dei_LegalEntityAxis = us-gaap_CorporateJointVentureMember
Income before tax | $ 335 us-gaap_NoncontrollingInterestInNetIncomeLossJointVenturePartnersNonredeemable / dei_LegalEntityAxis = us-gaap_CorporateJointVentureMember | $ 559 us-gaap_NoncontrollingInterestInNetIncomeLossJointVenturePartnersNonredeemable / dei_LegalEntityAxis = us-gaap_CorporateJointVentureMember

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- Definition The aggregate revenue from building and real estate development, which may include improvements (such as drainage, utilities, grading and subdividing) to a parcel of land, and general contracting services during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1(e)) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 + Details
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- Definition Sum of operating profit and nonoperating income or expense before Income or Loss from equity method investments, income taxes, extraordinary items, and noncontrolling interest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)(1)(i)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 + Details
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- Definition Amount after tax of income (loss) attributable to nonredeemable noncontrolling shareholder, unit holder, partner, or other equity holder of a joint venture. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.19) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 + Details
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- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 + Details
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