Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands |
May 31, 2019 |
Nov. 30, 2018 |
|---|---|---|
| Allowance for receivables | $ 1,000 | $ 1,000 |
| Property and Equipment, accumulated depreciation | $ 1,186,715 | $ 1,129,378 |
| Class A Common Stock $.01 Par Value | ||
| Common Stock, par value (in dollars per share) | $ 0.01 | $ 0.01 |
| Common Stock, shares authorized (in shares) | 80,000,000 | 80,000,000 |
| Common Stock, shares issued (in shares) | 23,498,775 | 23,408,516 |
| Common Stock, shares outstanding (in shares) | 23,498,775 | 23,408,516 |
| Class B Common Stock $.01 Par Value | ||
| Common Stock, par value (in dollars per share) | $ 0.01 | $ 0.01 |
| Common Stock, shares authorized (in shares) | 40,000,000 | 40,000,000 |
| Common Stock, shares issued (in shares) | 19,619,928 | 19,644,581 |
| Common Stock, shares outstanding (in shares) | 19,619,928 | 19,644,581 |