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STATEMENTS OF OPERATIONS - USD ($) | 3 Months Ended | 6 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Dec. 31, 2019 | Sep. 30, 2019 | Jun. 30, 2019 | Mar. 31, 2019 | Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Jun. 30, 2019 | Jun. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
STATEMENTS OF OPERATIONS |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Oil and Natural Gas Revenues |  | $ 50,339,105 | $ 51,334,225 | $ 41,798,315 |  | $ 32,687,179 | $ 29,924,883 | $ 29,891,391 |  |  |  |  | $ 93,132,540 | $ 59,816,274 | $ 143,471,645 | $ 92,503,453 | $ 195,702,831 | $ 120,065,361 | $ 66,699,700
Costs and Operating Expenses |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Oil and natural gas production costs |  | 15,478,052 | 11,569,109 | 9,408,764 |  |  |  |  |  |  |  |  | 20,977,873 |  | 36,455,925 |  | 48,496,225 | 27,801,989 | 15,978,362
Oil and natural gas production taxes |  | 2,307,226 | 2,412,895 | 2,082,875 |  |  |  |  |  |  |  |  | 4,495,770 |  | 6,802,996 |  | 9,130,379 | 5,631,093 | 3,152,562
Depreciation, depletion and amortization |  | 14,115,170 | 14,615,270 | 12,929,054 |  |  |  |  |  |  |  |  | 27,544,324 |  | 41,659,494 |  | 56,204,269 | 39,024,886 | 20,517,780
Ceiling test impairment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 14,172,309 | 0
Asset retirement obligation accretion |  | 236,207 | 229,234 | 215,945 |  |  |  |  |  |  |  |  | 445,179 |  | 681,386 |  | 943,707 | 606,459 | 567,968
Operating lease expense |  | 114,112 | 128,175 | 128,175 |  |  |  |  |  |  |  |  | 256,350 |  | 370,462 |  | 925,217 |  |
General and administrative expense |  | 3,745,928 | 4,743,127 | 6,798,017 |  |  |  |  |  |  |  |  | 11,541,144 |  | 15,287,072 |  | 19,866,706 | 12,867,686 | 10,515,887
Total Costs and Operating Expenses |  | 35,996,695 | 33,697,810 | 31,562,830 |  |  |  |  |  |  |  |  | 65,260,640 |  | 101,257,335 |  | 135,566,503 | 100,104,422 | 50,732,559
Income from Operations | $ 17,922,018 | 14,342,410 | 17,636,415 | 10,235,485 | $ (9,986,770) | 9,615,030 | 9,397,559 | 10,935,120 | $ 6,550,596 | $ 4,292,081 | $ 2,621,612 | $ 2,502,852 | 27,871,900 |  | 42,214,310 |  | 60,136,328 | 19,960,939 | 15,967,141
Other Income (Expense) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Interest income |  | 9 | 1,260 | 12,236 |  |  |  |  |  |  |  |  | 13,496 |  | 13,505 |  | 13,511 | 97,855 | 291,083
Interest expense |  | (4,556,509) | (4,259,908) | (773,017) |  |  |  |  |  |  |  |  | (5,032,925) |  | (9,589,434) |  | (13,865,556) | (427,898) | 0
Realized (loss) on derivatives |  | 0 | 0 | 0 |  |  |  |  |  |  |  |  | 0 |  | 0 |  | 0 | (11,153,702) | (119,897)
Unrealized gain (loss) on change in fair value of derivatives |  | 1,877,368 | 1,530,230 | (340,685) |  |  |  |  |  |  |  |  | 1,189,545 |  | 3,066,913 |  | (3,000,078) | 3,968,287 | (3,968,287)
Net Other (Expense) |  | (2,679,132) | (2,728,418) | (1,101,466) |  |  |  |  |  |  |  |  | (3,829,884) |  | (6,509,016) |  | (16,852,123) | (7,515,458) | (3,797,101)
Income Before Provision for Income Taxes |  | 11,663,278 | 14,907,997 | 9,134,019 |  |  |  |  |  |  |  |  | 24,042,016 |  | 35,705,294 |  | 43,284,205 | 12,445,481 | 12,170,040
(Provision for) Income Taxes |  | (2,805,278) | (3,565,400) | (4,864,759) |  |  |  |  |  |  |  |  | (8,430,159) |  | (11,235,437) |  | (13,787,654) | (3,445,721) | (10,416,171)
Net Income | $ 5,026,692 | $ 8,858,000 | $ 11,342,597 | $ 4,269,260 | $ (7,079,308) | $ 5,693,628 | $ 4,719,806 | $ 5,665,634 | $ (4,509,935) | $ 3,073,760 | $ 1,910,763 | $ 1,279,281 | $ 15,611,857 |  | $ 24,469,857 |  | $ 29,496,551 | $ 8,999,760 | $ 1,753,869
Basic Earnings per share (In dollars per share) | $ 0.08 | $ 0.13 | $ 0.17 | $ 0.07 | $ (0.12) | $ 0.09 | $ 0.08 | $ 0.10 | $ (0.08) | $ 0.06 | $ 0.04 | $ 0.03 | $ 0.24 |  | $ 0.37 |  | $ 0.44 | $ 0.15 | $ 0.03
Diluted Earnings per share (In dollars per share) | $ 0.08 | $ 0.13 | $ 0.17 | $ 0.07 | $ (0.12) | $ 0.09 | $ 0.08 | $ 0.10 | $ (0.08) | $ 0.06 | $ 0.04 | $ 0.03 | $ 0.24 |  | $ 0.37 |  | $ 0.44 | $ 0.15 | $ 0.03

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- Definition Amount of operating lease expense. Excludes sublease income. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 842 -SubTopic 20 -Section 45 -Paragraph 4 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918638-209977 + Details
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