Income Taxes - Additional Information (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended	12 Months Ended
	Dec. 31, 2017	Nov. 30, 2019	Nov. 30, 2019	Nov. 30, 2018	Nov. 30, 2017
Income Taxes [Line Items]
Tax at federal statutory rate	35.00%	21.00%
Deferred Tax Assets, Tax Credit Carryforwards, Alternative Minimum Tax		$ 0.1	$ 0.1
Net Operating Loss Carryforward Created in the Year			5.4
utilized federal net operating loss carryforward				$ 16.0	$ 7.8
Foreign tax credit carryforwards with indefinite carryforward periods		1.9	1.9
Income Taxes Paid			8.7	6.8	$ 4.5
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued				$ 0.2
Unrecognized Tax Benefits that Would Impact Effective Tax Rate		0.3	0.3
Undistributed Earnings of Foreign Subsidiaries		50.2	50.2
Domestic Tax Authority [Member]
Income Taxes [Line Items]
Operating Loss Carryforwards		70.2	70.2
Deferred Tax Assets, Capital Loss Carryforwards		8.1	8.1
State and Local Jurisdiction [Member]
Income Taxes [Line Items]
Operating Loss Carryforwards		82.1	82.1
Foreign Tax Authority [Member]
Income Taxes [Line Items]
Operating Loss Carryforwards		2.1	2.1
Tax Credit Carryforward, Amount		$ 0.1	$ 0.1