Stockholders' Equity - AOCI T2 rows (Details) - USD ($) $ in Thousands	12 Months Ended
	Nov. 30, 2016	Nov. 30, 2015	Nov. 30, 2014
Accumulated other comprehensive loss
Reclassifications, before tax	$ (1,358)	$ (1,234)	$ (197)
Reclassifications, tax (expense) benefit	(502)	(456)	(73)
Reclassifications, net of tax	(856)	(778)	(124)
Other changes, before reclassifications, before tax	(1,270)	(1,632)	(818)
Other changes, before reclassifications, tax (expense) benefit	450	604	308
Total other changes before reclassifications, net of tax	(820)	(1,028)	(510)
Total other comprehensive (loss) income, before tax	88	(398)	(621)
Total other comprehensive income (loss), tax	(52)	148	235
Total other comprehensive income (loss), net of tax	36	(250)	(386)
Accumulated Other Comprehensive Income (Loss)
Accumulated other comprehensive loss
Reclassifications, net of tax	(856)	(778)	(124)
Total other changes before reclassifications, net of tax	(820)	(1,028)	(510)
Total other comprehensive income (loss), net of tax	36	(250)	(386)
Mark-to-market foreign currency adjustment
Accumulated other comprehensive loss
Other changes, before reclassifications, before tax	(230)	(77)	(73)
Other changes, before reclassifications, tax (expense) benefit	80	27	25
Total other changes before reclassifications, net of tax	(150)	(50)	(48)
Mark-to-market fair value adjustment
Accumulated other comprehensive loss
Reclassifications, before tax			321
Reclassifications, tax (expense) benefit			117
Reclassifications, net of tax			204
Other changes, before reclassifications, before tax	(763)	123	358
Other changes, before reclassifications, tax (expense) benefit	267	(43)	(125)
Total other changes before reclassifications, net of tax	(496)	80	233
Actuarial Gain on Postretirement Benefit Program
Accumulated other comprehensive loss
Reclassifications, before tax			485
Reclassifications, tax (expense) benefit			181
Reclassifications, net of tax			304
Total other comprehensive income (loss), net of tax			(304)
Actuarial Gain on Postretirement Benefit Program | General and Administrative Expense
Accumulated other comprehensive loss
Reclassifications, net of tax			21
Actuarial Gain on Postretirement Benefit Program | Discontinued operations.
Accumulated other comprehensive loss
Reclassifications, net of tax			283
Unrealized Gain (Loss) on Cash Flow Hedges
Accumulated other comprehensive loss
Reclassifications, before tax	(1,358)	(1,234)	(1,003)
Reclassifications, tax (expense) benefit	(502)	(456)	(371)
Reclassifications, net of tax	(856)	(778)	(632)
Other changes, before reclassifications, before tax	(277)	(1,678)	(1,103)
Other changes, before reclassifications, tax (expense) benefit	103	620	408
Total other changes before reclassifications, net of tax	(174)	(1,058)	(695)
Total other comprehensive income (loss), net of tax	$ 682	$ (280)	$ (63)