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Retirement Plan (Details) - USD ($) $ in Millions	12 Months Ended
	Nov. 30, 2018	Nov. 30, 2017	Nov. 30, 2016
Retirement Benefits [Abstract]
Company contributions to the plan	$ 3.1	$ 2.1	$ 2.5

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- References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
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- Definition

Amount of discretionary contributions made by an employer to a defined contribution plan.

+ References

No definition available.

+ Details

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Period Type:	duration