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Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands | 6 Months Ended | 12 Months Ended
--- | --- | ---
Jun. 30, 2017 | Dec. 31, 2016
Statement of Financial Position [Abstract] |  |
Capitalized costs of oil and natural gas properties excluded from amortization | $ 3,109,143 | $ 1,580,305
Preferred stock, par value (usd per share) | $ 0.01 | $ 0.01
Preferred stock, shares authorized (shares) | 5,000,000 | 5,000,000
Preferred stock dividend rate, percent | 12.00% | 12.00%
Temporary equity, shares authorized (shares) | 30,000 | 30,000
Preferred stock Series A, issued (shares) | 0 | 0
Preferred stock Series A, outstanding (shares) | 0 | 0
Common stock, par value (usd per share) | $ 0.01 | $ 0.01
Common stock, shares authorized (shares) | 200,000,000 | 200,000,000
Common stock, shares, issued (shares) | 182,854,921 | 158,829,816
Common stock, shares, outstanding (shares) | 182,854,921 | 158,829,816

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- Definition The sum of the capitalized costs incurred, as of the balance sheet date, of unproved properties excluded from amortization including acquisition costs, exploration costs, development costs, and production costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-10.(c)(7)(ii)) -URI http://asc.fasb.org/extlink&oid=82851474&loc=d3e511914-122862 + Details
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