Capital Stock (Details)	12 Months Ended
	Nov. 30, 2017
Capital Stock [Line Items]
Maximum percentage of votes a holder of shares of Common Stock may cast out of the votes entitled to be cast by all holders of shares of Common Stock	10.00%
Minimum [Member]
Capital Stock [Line Items]
Minimum percentage a holder must acquire of each class of common stock not to be subject to our redemption rights	90.00%
Minimum percentage of votes a holder must control out of the votes entitled to be cast by all holders of shares of Common Stock to trigger the automatic conversion, on a share-for-share basis, of all shares of Common Stock Non-Voting into shares of Common Stock	50.00%