Variable Interest Entity Arrangements (Schedule of Assets and Liabilities) (Details) - USD ($) $ in Thousands		Jun. 30, 2021	Dec. 31, 2020	Jun. 30, 2020	Dec. 31, 2019
Current assets:
Cash and cash equivalents		$ 6,989	$ 12,145	$ 36,994	$ 571
Accounts receivable, net of allowance for doubtful accounts		63,879	57,846
Prepaid expenses and other		6,212	11,212
Total current assets		77,114	82,922
Property and equipment:
Gas gathering and processing equipment		255,338	251,404
Transportation equipment		3,486	3,130
Property, plant, and equipment, gross		597,941	600,989
Less accumulated depreciation, depletion, amortization, and impairment		88,416	54,189
Net property and equipment		509,525	546,800
Operating right of use asset		6,406	5,592
Other assets		16,111	14,389
Total assets	[1]	609,156	649,703
Current liabilities:
Accounts payable		38,081	37,368
Accrued liabilities		23,748	25,204
Current operating lease liability		3,515	4,075
Current portion of other long-term liabilities		7,551	11,168
Total current liabilities		115,314	80,347
Operating lease liability		2,856	1,445
VIE
Current assets:
Cash and cash equivalents		6,484	11,642
Accounts receivable, net of allowance for doubtful accounts		27,034	27,427
Prepaid expenses and other		3,890	6,746
Total current assets		37,408	45,815
Property and equipment:
Gas gathering and processing equipment		255,338	251,403
Transportation equipment		1,965	1,748
Property, plant, and equipment, gross		257,303	253,151
Less accumulated depreciation, depletion, amortization, and impairment		26,736	10,466
Net property and equipment		230,567	242,685
Operating right of use asset		4,419	2,823
Other assets		1,973	2,309
Total assets		274,367	293,632
Current liabilities:
Accounts payable		20,349	17,045
Accrued liabilities		4,541	3,777
Current operating lease liability		1,646	1,762
Current portion of other long-term liabilities		2,116	5,799
Total current liabilities		28,652	28,383
Operating lease liability		626	1,013
Other long-term liabilities		2,773	1,589
Total liabilities		$ 32,051	$ 30,985

[1] Unit Corporation's consolidated total assets as of June 30, 2021 include total current and long-term assets of its variable interest entity (VIE) (Superior Pipeline Company, L.L.C.) of $37.4 million and $237.0 million, respectively, which can only settle obligations of the VIE. Unit Corporation's consolidated total liabilities as of June 30, 2021 include total current and long-term liabilities of the VIE of $28.7 million and $3.4 million, respectively, for which the creditors of the VIE have no recourse to Unit Corporation. Unit Corporation's consolidated total assets as of December 31, 2020 include total current and long-term assets of the VIE of $45.8 million and $247.8 million, respectively, which can only settle obligations of the VIE. Unit Corporation's consolidated total liabilities as of December 31, 2020 include total current and long-term liabilities of the VIE of $28.4 million and $2.6 million, respectively, for which the creditors of the VIE have no recourse to Unit Corporation. See Note 16 – Variable Interest Entity Arrangements.