Stockholders' Equity - Stock Repurchases, Cash Dividend (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
Nov. 30, 2020	Nov. 30, 2019	Nov. 30, 2018
Cash Dividends
Cash dividends declared (in dollars per share)	$ 0	$ 0.50	$ 0.45
Dividends Payable		$ 2,538
Dividend paid		$ 2,538	$ 2,279
Dividends declared, per share (in dollars per share)		$ 0.50	$ 0.45
E & P Distribution
Cash Dividends
Dividends Payable	$ 11,250
Dividend payable per share	$ 1.99
Dividend paid	$ 3,398
Dividends declared, per share (in dollars per share)	$ 0.60

Aggregate dividends paid during the period for each share of common stock outstanding.

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