Stockholders' Equity - AOCI T2 rows (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	May 31, 2016	May 31, 2015	May 31, 2016	May 31, 2015
Accumulated other comprehensive loss
Reclassifications, before tax	$ (339)	$ (303)	$ (677)	$ (584)
Reclassifications, tax (expense) benefit	(125)	(112)	(250)	(216)
Reclassifications, net of tax	(214)	(191)	(427)	(368)
Other changes, before reclassifications, before tax	(85)	216	(2,290)	(278)
Other changes, before reclassifications, tax (expense) benefit	28	(72)	836	111
Total other changes before reclassifications, net of tax	(57)	144	(1,454)	(167)
Total other comprehensive (loss) income, before tax			(1,613)	306
Total other comprehensive (loss) income, tax			586	(105)
Total other comprehensive income (loss), net of tax	157	335	(1,027)	201
Accumulated Other Comprehensive Loss
Accumulated other comprehensive loss
Reclassifications, net of tax			(427)	(368)
Total other changes before reclassifications, net of tax			(1,454)	(167)
Total other comprehensive (loss) income, before tax	254	519
Total other comprehensive (loss) income, tax	(97)	(184)
Total other comprehensive income (loss), net of tax	157	335	(1,027)	201
Mark-to-market foreign currency adjustment
Accumulated other comprehensive loss
Other changes, before reclassifications, before tax	55	(23)	(73)	(49)
Other changes, before reclassifications, tax (expense) benefit	(19)	8	26	17
Total other changes before reclassifications, net of tax	36	(15)	(47)	(32)
Mark-to-market fair value adjustment
Accumulated other comprehensive loss
Other changes, before reclassifications, before tax	(183)	448	(448)	498
Other changes, before reclassifications, tax (expense) benefit	64	(157)	156	(175)
Total other changes before reclassifications, net of tax	(119)	291	(292)	323
Unrealized loss on cash flow hedges
Accumulated other comprehensive loss
Reclassifications, net of tax			(427)	(368)
Other changes, before reclassifications, before tax	43	(209)	(1,769)	(727)
Other changes, before reclassifications, tax (expense) benefit	(17)	77	654	269
Total other changes before reclassifications, net of tax	26	(132)	(1,115)	(458)
Total other comprehensive income (loss), net of tax			(688)	(90)
Unrealized loss on cash flow hedges | Interest Expense [Member]
Accumulated other comprehensive loss
Reclassifications, before tax	(339)	(303)	(677)	(584)
Reclassifications, tax (expense) benefit	(125)	(112)	(250)	(216)
Reclassifications, net of tax	$ (214)	$ (191)	$ (427)	$ (368)