Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	May 31, 2019	May 31, 2018	May 31, 2019	May 31, 2018
Statement of Comprehensive Income [Abstract]
Amortization of interest rate swap, net of tax benefit	$ 65	$ 71	$ 132	$ 152