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CONSOLIDATED BALANCE SHEETS (UNAUDITED) (PARENTHETICAL) - USD ($) $ in Thousands | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2019 | Dec. 31, 2018
Statement of Financial Position [Abstract] |  |
Capitalized costs of oil and natural gas properties excluded from amortization | $ 2,260,759 | $ 2,873,037
Preferred stock, par value (in usd per share) | $ 0.01 | $ 0.01
Preferred stock, shares authorized (in shares) | 5,000,000 | 5,000,000
Preferred stock, dividend rate | 12.00% | 12.00%
Preferred stock, shares authorized (in shares) | 30,000 | 30,000
Preferred stock Series A, issued (in shares) | 0 | 0
Preferred stock Series A, outstanding (in shares) | 0 | 0
Common stock, par value (in usd per share) | $ 0.01 | $ 0.01
Common stock, shares authorized (in shares) | 200,000,000 | 200,000,000
Common stock, shares, issued (in shares) | 159,709,221 | 162,986,045
Common stock, shares, outstanding (in shares) | 159,709,221 | 162,986,045

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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://fasb.org/us-gaap/role/ref/legacyRef -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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