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Other Stock and Retirement Plans Other Stock and Retirement Plans (Details) - USD ($)
$ in Thousands
3 Months Ended 12 Months Ended
Feb. 28, 2017
Feb. 28, 2019
Feb. 28, 2018
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant   1,113,000  
Defined Contribution Plan, Employer Discretionary Contribution Amount $ 0 $ 0 $ 0
Deferred Compensation Arrangement with Individual, Cash Awards Granted, Percentage of Deferred Salary   25.00%  
Deferred Compensation Arrangement with Individual, Maximum Employer Contribution   $ 20  
Deferred Compensation Plan Assets   2,858 3,620
Deferred Compensation Liability, Current and Noncurrent   250  
Deferred Profit Sharing [Member]      
Defined Contribution Plan, Employer Discretionary Contribution Amount 408 378 388
Deferred Bonus [Member]      
Defined Contribution Plan, Employer Discretionary Contribution Amount $ 0 $ 0 $ 0