Stockholders' Equity - Accumulated Other Comprehensive Income Activity (Details) - USD ($) $ in Thousands	3 Months Ended
	Feb. 28, 2019	Feb. 28, 2018
Change in accumulated other comprehensive loss, net of tax
Balance at the beginning of the year	$ 2,395
Reclassifications included in net loss	42	$ 192
Balance at the end of the year	937
Unrealized Gain (Loss) on Cash Flow Hedges
Change in accumulated other comprehensive loss, net of tax
Balance at the beginning of the year	2,395	(284)
Other comprehensive income before reclassifications	(1,500)	1,949
Reclassifications included in net loss	42	192
Adoption of ASU 2018-02 - reclassification of deferred taxes to retained earnings		(36)
Net activity for other comprehensive income	(1,458)	2,105
Balance at the end of the year	$ 937	$ 1,821