Stockholders' Equity - AOCI T2 rows (Details) - USD ($) $ in Thousands	3 Months Ended
	Feb. 28, 2017	Feb. 29, 2016
Accumulated other comprehensive loss
Reclassifications, before tax	$ (339)	$ (338)
Reclassifications, tax (expense) benefit	(130)	(125)
Reclassifications, net of tax	(209)	(213)
Other changes, before reclassifications, before tax	527	(2,205)
Other changes, before reclassifications, tax (expense) benefit	(196)	808
Total other changes before reclassifications, net of tax	331	(1,397)
Total other comprehensive income (loss), net of tax	540	(1,184)
Accumulated Other Comprehensive Income (Loss)
Accumulated other comprehensive loss
Reclassifications, net of tax	(209)	(213)
Total other changes before reclassifications, net of tax	331	(1,397)
Total other comprehensive (loss) income, before tax	866	(1,867)
Total other comprehensive income (loss), tax	(326)	683
Total other comprehensive income (loss), net of tax	540	(1,184)
Mark-to-market foreign currency adjustment
Accumulated other comprehensive loss
Other changes, before reclassifications, before tax	(12)	(128)
Other changes, before reclassifications, tax (expense) benefit	4	45
Total other changes before reclassifications, net of tax	(8)	(83)
Mark-to-market fair value adjustment
Accumulated other comprehensive loss
Other changes, before reclassifications, before tax	207	(265)
Other changes, before reclassifications, tax (expense) benefit	(72)	92
Total other changes before reclassifications, net of tax	135	(173)
Unrealized Gain (Loss) on Cash Flow Hedges
Accumulated other comprehensive loss
Reclassifications, net of tax	(209)	(213)
Other changes, before reclassifications, before tax	332	(1,812)
Other changes, before reclassifications, tax (expense) benefit	(128)	671
Total other changes before reclassifications, net of tax	204	(1,141)
Total other comprehensive income (loss), net of tax	413	(928)
Unrealized Gain (Loss) on Cash Flow Hedges | Interest Expense [Member]
Accumulated other comprehensive loss
Reclassifications, before tax	(339)	(338)
Reclassifications, tax (expense) benefit	(130)	(125)
Reclassifications, net of tax	$ (209)	$ (213)