Stockholders' Equity - AOCI T2 rows (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Aug. 31, 2016	Aug. 31, 2015	Aug. 31, 2016	Aug. 31, 2015
Accumulated other comprehensive loss
Reclassifications, before tax	$ (348)	$ (300)	$ (1,025)	$ (884)
Reclassifications, tax (expense) benefit	(129)	(111)	(379)	(327)
Reclassifications, net of tax	(219)	(189)	(646)	(557)
Other changes, before reclassifications, before tax	(1,520)	104	(3,810)	(174)
Other changes, before reclassifications, tax (expense) benefit	556	(35)	1,392	76
Total other changes before reclassifications, net of tax	(964)	69	(2,418)	(98)
Total other comprehensive (loss) income, before tax			(2,785)	710
Total other comprehensive (loss) income, tax			1,013	(251)
Total other comprehensive (loss) income, net of tax	(745)	258	(1,772)	459
Accumulated Other Comprehensive Income (Loss)
Accumulated other comprehensive loss
Reclassifications, net of tax			(646)	(557)
Total other changes before reclassifications, net of tax			(2,418)	(98)
Total other comprehensive (loss) income, before tax	(1,172)	404
Total other comprehensive (loss) income, tax	427	(146)
Total other comprehensive (loss) income, net of tax	(745)	258	(1,772)	459
Mark-to-market foreign currency adjustment
Accumulated other comprehensive loss
Other changes, before reclassifications, before tax	(108)	10	(181)	(39)
Other changes, before reclassifications, tax (expense) benefit	37	(4)	63	13
Total other changes before reclassifications, net of tax	(71)	6	(118)	(26)
Mark-to-market fair value adjustment
Accumulated other comprehensive loss
Other changes, before reclassifications, before tax	(283)	179	(731)	677
Other changes, before reclassifications, tax (expense) benefit	100	(62)	256	(237)
Total other changes before reclassifications, net of tax	(183)	117	(475)	440
Unrealized loss on cash flow hedges
Accumulated other comprehensive loss
Reclassifications, net of tax			(646)	(557)
Other changes, before reclassifications, before tax	(1,129)	(85)	(2,898)	(812)
Other changes, before reclassifications, tax (expense) benefit	419	31	1,073	300
Total other changes before reclassifications, net of tax	(710)	(54)	(1,825)	(512)
Total other comprehensive (loss) income, net of tax			(1,179)	45
Unrealized loss on cash flow hedges | Interest Expense [Member]
Accumulated other comprehensive loss
Reclassifications, before tax	(348)	(300)	(1,025)	(884)
Reclassifications, tax (expense) benefit	(129)	(111)	(379)	(327)
Reclassifications, net of tax	$ (219)	$ (189)	$ (646)	$ (557)