Stockholders' Equity - AOCI T2 rows (Details) - USD ($) $ in Thousands	12 Months Ended
	Nov. 30, 2017	Nov. 30, 2016	Nov. 30, 2015
Accumulated other comprehensive loss
Reclassifications, before tax	$ 1,018	$ 1,358	$ 1,234
Reclassifications, tax (expense) benefit	367	502	456
Reclassifications, net of tax	651	856	778
Other changes, before reclassifications, before tax	187	(1,270)	(1,632)
Other changes, before reclassifications, tax (expense) benefit	(73)	450	604
Total other changes before reclassifications, net of tax	114	(820)	(1,028)
Total other comprehensive (loss) income, before tax	1,205	88	(398)
Total other comprehensive income (loss), tax	(440)	(52)	148
Total other comprehensive income (loss), net of tax	765	36	(250)
Gain (Loss) on Investments [Member]
Accumulated other comprehensive loss
Reclassifications, before tax	(281)
Reclassifications, tax (expense) benefit	(109)
Reclassifications, net of tax	(172)
Accumulated Other Comprehensive Loss
Accumulated other comprehensive loss
Reclassifications, net of tax	651	856	778
Total other changes before reclassifications, net of tax	114	(820)	(1,028)
Total other comprehensive income (loss), net of tax	765	36	(250)
Unrealized Gain (Loss) on Cash Flow Hedges
Accumulated other comprehensive loss
Reclassifications, before tax	1,299	1,358	1,234
Reclassifications, tax (expense) benefit	476	502	456
Reclassifications, net of tax	823	856	778
Other changes, before reclassifications, before tax	(58)	(277)	(1,678)
Other changes, before reclassifications, tax (expense) benefit	13	103	620
Total other changes before reclassifications, net of tax	(45)	(174)	(1,058)
Total other comprehensive income (loss), net of tax	778	682	(280)
Mark-to-market foreign currency adjustment
Accumulated other comprehensive loss
Other changes, before reclassifications, before tax	220	(763)	123
Other changes, before reclassifications, tax (expense) benefit	(77)	267	(43)
Total other changes before reclassifications, net of tax	143	(496)	80
Mark-to-market fair value adjustment
Accumulated other comprehensive loss
Other changes, before reclassifications, before tax	25	(230)	(77)
Other changes, before reclassifications, tax (expense) benefit	(9)	80	27
Total other changes before reclassifications, net of tax	$ 16	$ (150)	$ (50)