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CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) (in thousands, except share data) - USD ($) $ in Thousands | Mar. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Current assets: |  |
Cash and cash equivalents | $ 15 | $ 10
Accounts receivable | 143,311 | 184,732
Derivative assets | 463,992 | 55,184
Prepaid expenses and other | 17,842 | 12,708
Total current assets | 625,160 | 252,634
Property and equipment (successful efforts method): |  |
Proved oil and gas properties | 8,043,156 | 8,934,020
Accumulated depletion, depreciation, and amortization | (4,389,103) | (4,177,876)
Unproved oil and gas properties | 972,844 | 1,005,887
Wells in progress | 224,509 | 118,769
Other property and equipment, net of accumulated depreciation of $64,815 and $64,032, respectively | 36,932 | 72,848
Total property and equipment, net | 4,888,338 | 5,953,648
Noncurrent assets: |  |
Derivative assets | 44,909 | 20,624
Other noncurrent assets | 56,618 | 65,326
Total noncurrent assets | 101,527 | 85,950
Total assets | 5,615,025 | 6,292,232
Other property and equipment, accumulated depreciation | 64,815 | 64,032
Current liabilities: |  |
Accounts payable and accrued expenses | 359,406 | 402,008
Derivative liabilities | 8,277 | 50,846
Other current liabilities | 15,780 | 19,189
Total current liabilities | 383,463 | 472,043
Noncurrent liabilities: |  |
Revolving credit facility | 72,000 | 122,500
Senior Notes, net of unamortized deferred financing costs | 2,413,663 | 2,453,035
Senior Convertible Notes, net of unamortized discount and deferred financing costs | 159,721 | 157,263
Asset retirement obligations | 85,267 | 84,134
Deferred income taxes | 93,918 | 189,386
Derivative liabilities | 7,202 | 3,444
Other noncurrent liabilities | 58,074 | 61,433
Total noncurrent liabilities | 2,889,845 | 3,071,195
Commitments and contingencies (note 6) |  |
Stockholders’ equity: |  |
Common stock, $0.01 par value - authorized: 200,000,000 shares; issued and outstanding: 112,988,682 and 112,987,952 shares, respectively | 1,130 | 1,130
Additional paid-in capital | 1,797,154 | 1,791,596
Retained earnings | 554,562 | 967,587
Accumulated other comprehensive loss | (11,129) | (11,319)
Total stockholders' equity | 2,341,717 | 2,748,994
Total liabilities and stockholders’ equity | $ 5,615,025 | $ 6,292,232
Common Stock, Par or Stated Value Per Share | $ 0.01 | $ 0.01
Common Stock, Shares Authorized | 200,000,000 | 200,000,000
Common Stock, Shares, Issued | 112,988,682 | 112,987,952
Common Stock, Shares, Outstanding | 112,988,682 | 112,987,952

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- Definition Total obligations incurred as part of normal operations that are expected to be paid during the following twelve months or within one business cycle, if longer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.21) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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