Earnings (Loss) Per Share (Tables)

12 Months Ended

Dec. 31, 2018

Earnings Per Share [Abstract]

Schedule of Earnings (Loss) Per Share [Table Text Block]

The following data shows the amounts used in computing earnings (loss) per share:

	Income (Loss) (Numerator)		Weighted Shares (Denominator)	Per-Share Amount
	(In thousands except per share amounts)
For the year ended December 31, 2016:
Basic loss attributable to Unit Corporation per common share	$	(135,624)	50,029	$	(2.71)
Effect of dilutive stock options, restricted stock, and SARs	—		—	—
Diluted loss attributable to Unit Corporation per common share	$	(135,624)	50,029	$	(2.71)
For the year ended December 31, 2017:
Basic earnings attributable to Unit Corporation per common share	$	117,848	51,113	$	2.31
Effect of dilutive stock options	—		635	(0.03)
Diluted income attributable to Unit Corporation per common share	$	117,848	51,748	$	2.28
For the year ended December 31, 2018:
Basic loss attributable to Unit Corporation per common share	(45,288)		51,981	$	(0.87)
Effect of dilutive restricted stock	—		—	—
Diluted loss attributable to Unit Corporation per common share	$	(45,288)	51,981	$	(0.87)

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]

The following options and their average exercise prices were not included in the computation of diluted earnings per share because the option exercise prices were greater than the average market price of our common stock for the years ended December 31:

	2018		2017		2016
Options and SARs	66,500		87,500		199,755
Average exercise price	$	44.42	$	51.34	$	48.79