Stockholders' Equity - AOCI T2 rows (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	May 31, 2017	May 31, 2016	May 31, 2017	May 31, 2016
Accumulated other comprehensive loss
Reclassifications, before tax	$ 342	$ 339	$ 681	$ 677
Reclassifications, tax (expense) benefit	(124)	(125)	(254)	(250)
Reclassifications, net of tax	218	214	427	427
Other changes, before reclassifications, before tax	(1,197)	(85)	(670)	(2,290)
Other changes, before reclassifications, tax (expense) benefit	433	28	237	836
Total other changes before reclassifications, net of tax	(764)	(57)	(433)	(1,454)
Total other comprehensive (loss) income, net of tax	(546)	157	(6)	(1,027)
Interest Expense [Member]
Accumulated other comprehensive loss
Reclassifications, before tax			(681)	(677)
Reclassifications, tax (expense) benefit			254	250
Reclassifications, net of tax			(427)	(427)
Accumulated Other Comprehensive Loss
Accumulated other comprehensive loss
Reclassifications, net of tax			427	427
Total other changes before reclassifications, net of tax			(433)	(1,454)
Total other comprehensive (loss) income, before tax	(855)	254	11	(1,613)
Total other comprehensive income (loss), tax	309	(97)	(17)	586
Total other comprehensive (loss) income, net of tax	(546)	157	(6)	(1,027)
Mark-to-market foreign currency adjustment
Accumulated other comprehensive loss
Other changes, before reclassifications, before tax	48	55	36	(73)
Other changes, before reclassifications, tax (expense) benefit	(16)	(19)	(12)	26
Total other changes before reclassifications, net of tax	32	36	24	(47)
Mark-to-market fair value adjustment
Accumulated other comprehensive loss
Other changes, before reclassifications, before tax	52	(183)	259	(448)
Other changes, before reclassifications, tax (expense) benefit	(19)	64	(91)	156
Total other changes before reclassifications, net of tax	33	(119)	168	(292)
Unrealized Gain (Loss) on Cash Flow Hedges
Accumulated other comprehensive loss
Reclassifications, net of tax			427	427
Other changes, before reclassifications, before tax	(1,297)	43	(965)	(1,769)
Other changes, before reclassifications, tax (expense) benefit	468	(17)	340	654
Total other changes before reclassifications, net of tax	(829)	26	(625)	(1,115)
Total other comprehensive (loss) income, net of tax			$ (198)	$ (688)
Unrealized Gain (Loss) on Cash Flow Hedges | Interest Expense [Member]
Accumulated other comprehensive loss
Reclassifications, before tax	342	339
Reclassifications, tax (expense) benefit	124	125
Reclassifications, net of tax	$ 218	$ 214