Income Taxes (Tables)

3 Months Ended

Feb. 28, 2019

Income Tax Disclosure [Abstract]

Income tax benefit computed at the statutory U.S federal income tax rate and income tax benefit (expense) provided in the consolidated statements of operations

Our income tax expense and effective tax rates were as follows (dollars in thousands):

	Three Months Ended February 28,
	2019			2018
Income tax expense	$	4,500		$	117,300
Effective tax rate	13.0		%	254.8		%