Stockholders' Equity - AOCI T2 rows (Details) - USD ($) $ in Thousands	12 Months Ended
	Nov. 30, 2018	Nov. 30, 2017	Nov. 30, 2016
Accumulated Other Comprehensive Income (Loss)
Reclassifications, before tax	$ 636	$ 1,018	$ 1,358
Reclassifications, tax (expense) benefit	163	367	502
Reclassifications, net of tax	473	651	856
Other changes, before reclassifications, before tax	2,876	187	(1,270)
Other changes, before reclassifications, tax (expense) benefit	(634)	(73)	450
Total other changes before reclassifications, net of tax	2,242	114	(820)
Total other comprehensive (loss) income, before tax	3,512	1,205	88
Total other comprehensive income (loss), tax	(797)	(440)	(52)
Total other comprehensive income, net of tax	2,715	765	36
Gain (Loss) on Investments [Member]
Accumulated Other Comprehensive Income (Loss)
Reclassifications, before tax		(281)
Reclassifications, tax (expense) benefit		(109)
Reclassifications, net of tax		(172)
Accumulated Other Comprehensive Loss
Accumulated Other Comprehensive Income (Loss)
Reclassifications, net of tax	473	651	856
Total other changes before reclassifications, net of tax	2,242	114	(820)
Total other comprehensive income, net of tax	2,715	765	36
Unrealized Gain (Loss) on Cash Flow Hedges
Accumulated Other Comprehensive Income (Loss)
Reclassifications, before tax	636	1,299	1,358
Reclassifications, tax (expense) benefit	163	476	502
Reclassifications, net of tax	473	823	856
Other changes, before reclassifications, before tax	2,876	(58)	(277)
Other changes, before reclassifications, tax (expense) benefit	(634)	13	103
Total other changes before reclassifications, net of tax	$ 2,242	(45)	(174)
Mark-to-market foreign currency adjustment
Accumulated Other Comprehensive Income (Loss)
Other changes, before reclassifications, before tax		220	(763)
Other changes, before reclassifications, tax (expense) benefit		(77)	267
Total other changes before reclassifications, net of tax		143	(496)
Mark-to-market fair value adjustment
Accumulated Other Comprehensive Income (Loss)
Other changes, before reclassifications, before tax		25	(230)
Other changes, before reclassifications, tax (expense) benefit		(9)	80
Total other changes before reclassifications, net of tax		$ 16	$ (150)