Income Taxes Income Taxes (Tables)

3 Months Ended

Feb. 28, 2017

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 income tax rate were as follows (dollars in thousands):

	Three Months Ended
	February 28, 2017			February 29, 2016
Income tax expense (a)	$	7,200		$	2,900
Effective income tax rate (a)	33.6		%	18.1		%

(a) Amounts reflect the favorable net impact of federal energy tax credits we earned from building energy-efficient homes. The net impact of these tax credits was $1.1 million and $3.3 million for the three months ended February 28, 2017 and February 29, 2016, respectively.