Stockholders' Equity - AOCI T2 rows (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Feb. 29, 2016	Feb. 28, 2015
Accumulated other comprehensive loss
Reclassifications, before tax	$ (338)	$ (281)
Reclassifications, tax (expense) benefit	(125)	(104)
Reclassifications, net of tax	(213)	(177)
Other changes, before reclassifications, before tax	(2,205)	(494)
Other changes, before reclassifications, tax (expense) benefit	808	183
Total change in other comprehensive (loss) income, net of tax	(1,397)	(311)
Total other comprehensive loss, net of tax	(1,184)	(134)
Cash Dividend
Cash dividend paid	$ 1,546	$ 1,030
Cash dividends declared (in dollars per share)	$ 0	$ 0
Accumulated Other Comprehensive Loss
Accumulated other comprehensive loss
Reclassifications, net of tax	$ (213)	$ (177)
Total change in other comprehensive (loss) income, net of tax	(1,397)	(311)
Total other comprehensive (loss) income, before tax	(1,867)	(213)
Total other comprehensive (loss) income, tax	683	79
Total other comprehensive loss, net of tax	(1,184)	(134)
Mark-to-market foreign currency adjustment
Accumulated other comprehensive loss
Other changes, before reclassifications, before tax	(128)	(26)
Other changes, before reclassifications, tax (expense) benefit	45	9
Total change in other comprehensive (loss) income, net of tax	(83)	(17)
Mark-to-market fair value adjustment
Accumulated other comprehensive loss
Other changes, before reclassifications, before tax	(265)	50
Other changes, before reclassifications, tax (expense) benefit	92	(18)
Total change in other comprehensive (loss) income, net of tax	(173)	32
Unrealized loss on cash flow hedges
Accumulated other comprehensive loss
Reclassifications, net of tax	(213)	(177)
Other changes, before reclassifications, before tax	(1,812)	(518)
Other changes, before reclassifications, tax (expense) benefit	671	192
Total change in other comprehensive (loss) income, net of tax	(1,141)	(326)
Total other comprehensive loss, net of tax	(928)	(149)
Unrealized loss on cash flow hedges | Interest Expense [Member]
Accumulated other comprehensive loss
Reclassifications, before tax	(338)	(281)
Reclassifications, tax (expense) benefit	(125)	(104)
Reclassifications, net of tax	$ (213)	$ (177)