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Condensed Consolidating Financial Information - Schedule of Condensed Consolidating Statement of Operations (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Revenues    
Total revenues $ 575,732 $ 473,812
Operating expenses    
Lease operating expenses 58,444 44,781
Marketing, transportation and gathering expenses 34,950 21,013
Production taxes 29,618 31,000
Depreciation, depletion and amortization 189,833 149,265
Exploration expenses 830 769
Impairment 629 93
General and administrative expenses 34,459 27,940
Total operating expenses 522,366 360,827
Loss on sale of properties (2,922) 0
Operating income 50,444 112,985
Other income (expense)    
Equity In Earnings In Subsidiaries 0 0
Net loss on derivative instruments (117,611) (71,116)
Interest expense, net of capitalized interest (44,468) (37,146)
Other income (expense) (46) (183)
Total other expense (162,125) (108,445)
Income (loss) before income taxes (111,681) 4,540
Income tax benefit (expense) 3,703 (828)
Net income (loss) including non-controlling interests (107,978) 3,712
Less: Net income attributable to non-controlling interests 6,904 3,122
Net income (loss) attributable to Oasis (114,882) 590
Intercompany Eliminations    
Revenues    
Total revenues (46,700) (34,649)
Operating expenses    
Lease operating expenses (13,341) (10,918)
Marketing, transportation and gathering expenses (10,287) (5,659)
Production taxes 0 0
Depreciation, depletion and amortization (5,165) (3,326)
Exploration expenses 0 0
Impairment 0 0
General and administrative expenses (4,173) (3,120)
Total operating expenses (45,000) (32,900)
Loss on sale of properties 0  
Operating income (1,700) (1,749)
Other income (expense)    
Equity In Earnings In Subsidiaries 46,153 (63,693)
Net loss on derivative instruments 0 0
Interest expense, net of capitalized interest 0 0
Other income (expense) 0 0
Total other expense 46,153 (63,693)
Income (loss) before income taxes 44,453 (65,442)
Income tax benefit (expense) 0 0
Net income (loss) including non-controlling interests 44,453 (65,442)
Less: Net income attributable to non-controlling interests (21,796) (21,574)
Net income (loss) attributable to Oasis 66,249 (43,868)
Parent/ Issuer    
Revenues    
Total revenues 0 0
Operating expenses    
Lease operating expenses 0 0
Marketing, transportation and gathering expenses 0 0
Production taxes 0 0
Depreciation, depletion and amortization 0 0
Exploration expenses 0 0
Impairment 0 0
General and administrative expenses 9,087 7,232
Total operating expenses 9,087 7,232
Loss on sale of properties 0  
Operating income (9,087) (7,232)
Other income (expense)    
Equity In Earnings In Subsidiaries (89,492) 32,164
Net loss on derivative instruments 0 0
Interest expense, net of capitalized interest (32,876) (32,446)
Other income (expense) 0 0
Total other expense (122,368) (282)
Income (loss) before income taxes (131,455) (7,514)
Income tax benefit (expense) 16,573 8,104
Net income (loss) including non-controlling interests (114,882) 590
Less: Net income attributable to non-controlling interests 0 0
Net income (loss) attributable to Oasis (114,882) 590
Combined Guarantor Subsidiaries    
Revenues    
Total revenues 530,781 447,040
Operating expenses    
Lease operating expenses 71,785 55,699
Marketing, transportation and gathering expenses 45,237 26,672
Production taxes 29,618 31,000
Depreciation, depletion and amortization 186,069 146,227
Exploration expenses 830 769
Impairment 629 93
General and administrative expenses 20,825 17,678
Total operating expenses 513,715 356,865
Loss on sale of properties (2,922)  
Operating income 14,144 90,175
Other income (expense)    
Equity In Earnings In Subsidiaries 43,339 31,529
Net loss on derivative instruments (117,611) (71,116)
Interest expense, net of capitalized interest (7,844) (4,438)
Other income (expense) (46) (183)
Total other expense (82,162) (44,208)
Income (loss) before income taxes (68,018) 45,967
Income tax benefit (expense) (12,870) (8,932)
Net income (loss) including non-controlling interests (80,888) 37,035
Less: Net income attributable to non-controlling interests 6,904 3,122
Net income (loss) attributable to Oasis (87,792) 33,913
Combined Non-guarantor Subsidiaries    
Revenues    
Total revenues 91,651 61,421
Operating expenses    
Lease operating expenses 0 0
Marketing, transportation and gathering expenses 0 0
Production taxes 0 0
Depreciation, depletion and amortization 8,929 6,364
Exploration expenses 0 0
Impairment 0 0
General and administrative expenses 8,720 6,150
Total operating expenses 44,564 29,630
Loss on sale of properties 0  
Operating income 47,087 31,791
Other income (expense)    
Equity In Earnings In Subsidiaries 0 0
Net loss on derivative instruments 0 0
Interest expense, net of capitalized interest (3,748) (262)
Other income (expense) 0 0
Total other expense (3,748) (262)
Income (loss) before income taxes 43,339 31,529
Income tax benefit (expense) 0 0
Net income (loss) including non-controlling interests 43,339 31,529
Less: Net income attributable to non-controlling interests 21,796 21,574
Net income (loss) attributable to Oasis 21,543 9,955
Oil and gas revenues    
Revenues    
Total revenues 368,782 366,595
Oil and gas revenues | Intercompany Eliminations    
Revenues    
Total revenues 0 0
Oil and gas revenues | Parent/ Issuer    
Revenues    
Total revenues 0 0
Oil and gas revenues | Combined Guarantor Subsidiaries    
Revenues    
Total revenues 368,782 366,595
Oil and gas revenues | Combined Non-guarantor Subsidiaries    
Revenues    
Total revenues 0 0
Purchased oil and gas    
Revenues    
Total revenues 148,471 67,709
Operating expenses    
Expenses 149,904 70,594
Purchased oil and gas | Intercompany Eliminations    
Revenues    
Total revenues 0 0
Operating expenses    
Expenses 0 0
Purchased oil and gas | Parent/ Issuer    
Revenues    
Total revenues 0 0
Operating expenses    
Expenses 0 0
Purchased oil and gas | Combined Guarantor Subsidiaries    
Revenues    
Total revenues 148,471 67,709
Operating expenses    
Expenses 149,904 70,594
Purchased oil and gas | Combined Non-guarantor Subsidiaries    
Revenues    
Total revenues 0 0
Operating expenses    
Expenses 0 0
Midstream Services    
Revenues    
Total revenues 48,021 27,922
Operating expenses    
Expenses 16,729 7,985
Midstream Services | Intercompany Eliminations    
Revenues    
Total revenues (46,700) (34,649)
Operating expenses    
Expenses (12,034) (9,877)
Midstream Services | Parent/ Issuer    
Revenues    
Total revenues 0 0
Operating expenses    
Expenses 0 0
Midstream Services | Combined Guarantor Subsidiaries    
Revenues    
Total revenues 3,070 1,150
Operating expenses    
Expenses 1,848 746
Midstream Services | Combined Non-guarantor Subsidiaries    
Revenues    
Total revenues 91,651 61,421
Operating expenses    
Expenses 26,915 17,116
Well Services    
Revenues    
Total revenues 10,458 11,586
Operating expenses    
Expenses 6,970 7,387
Well Services | Intercompany Eliminations    
Revenues    
Total revenues 0 0
Operating expenses    
Expenses 0 0
Well Services | Parent/ Issuer    
Revenues    
Total revenues 0 0
Operating expenses    
Expenses 0 0
Well Services | Combined Guarantor Subsidiaries    
Revenues    
Total revenues 10,458 11,586
Operating expenses    
Expenses 6,970 7,387
Well Services | Combined Non-guarantor Subsidiaries    
Revenues    
Total revenues 0 0
Operating expenses    
Expenses $ 0 $ 0