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Share-Based Payments - Summary of Bonus Consisting of Cash and Shares of Beneficial Interest (Details)
Jan. 31, 2018
USD ($)
shares
Pamela J. Barnhill [Member] | Fiscal 2017- Short-Term Cash and Equity Bonus Program [Member]  
Shares of Beneficial Interest, Cash | $ $ 10,000
Shares of Beneficial Interest, Equity | shares 10,000
Pamela J. Barnhill [Member] | Fiscal 2017- Full Year Cash and Equity Bonus Program [Member]  
Shares of Beneficial Interest, Cash | $ $ 25,000
Shares of Beneficial Interest, Equity | shares 10,000
Pamela J. Barnhill [Member] | Fiscal 2017- Payouts Under Short-Term and Full Year Cash and Equity Bonus Programs [Member]  
Shares of Beneficial Interest, Cash | $ $ 5,000
Shares of Beneficial Interest, Equity | shares 3,000
Pamela J. Barnhill [Member] | Fiscal 2018- Short-Term Cash and Equity Bonus Program [Member]  
Shares of Beneficial Interest, Cash | $ $ 25,000
Shares of Beneficial Interest, Equity | shares 10,000
Pamela J. Barnhill [Member] | Fiscal 2018- Short-Term Cash and Equity Bonus Program [Member] | February 1, 2017 through May 31, 2017 [Member]  
Shares of Beneficial Interest, Cash | $ $ 5,000
Shares of Beneficial Interest, Equity | shares 3,000
Pamela J. Barnhill [Member] | Fiscal 2018- Short-Term Cash and Equity Bonus Program [Member] | June 1, 2017 through December 31, 2017 [Member]  
Shares of Beneficial Interest, Cash | $ $ 10,000
Shares of Beneficial Interest, Equity | shares 4,000
Marc E. Berg [Member] | Fiscal 2017- Short-Term Cash and Equity Bonus Program [Member]  
Shares of Beneficial Interest, Cash | $ $ 2,500
Shares of Beneficial Interest, Equity | shares 2,500
Marc E. Berg [Member] | Fiscal 2017- Full Year Cash and Equity Bonus Program [Member]  
Shares of Beneficial Interest, Cash | $ $ 5,000
Shares of Beneficial Interest, Equity | shares 2,500
Marc E. Berg [Member] | Fiscal 2017- Payouts Under Short-Term and Full Year Cash and Equity Bonus Programs [Member]  
Shares of Beneficial Interest, Cash | $ $ 1,000
Shares of Beneficial Interest, Equity | shares 750
Marc E. Berg [Member] | Fiscal 2018- Short-Term Cash and Equity Bonus Program [Member]  
Shares of Beneficial Interest, Cash | $ $ 5,000
Shares of Beneficial Interest, Equity | shares 2,500
Marc E. Berg [Member] | Fiscal 2018- Short-Term Cash and Equity Bonus Program [Member] | February 1, 2017 through May 31, 2017 [Member]  
Shares of Beneficial Interest, Cash | $ $ 1,000
Shares of Beneficial Interest, Equity | shares 750
Marc E. Berg [Member] | Fiscal 2018- Short-Term Cash and Equity Bonus Program [Member] | June 1, 2017 through December 31, 2017 [Member]  
Shares of Beneficial Interest, Cash | $ $ 2,000
Shares of Beneficial Interest, Equity | shares 1,000
Adam B. Remis [Member] | Fiscal 2017- Short-Term Cash and Equity Bonus Program [Member]  
Shares of Beneficial Interest, Cash | $ $ 5,000
Shares of Beneficial Interest, Equity | shares 5,000
Adam B. Remis [Member] | Fiscal 2017- Full Year Cash and Equity Bonus Program [Member]  
Shares of Beneficial Interest, Cash | $ $ 10,000
Shares of Beneficial Interest, Equity | shares 5,000
Adam B. Remis [Member] | Fiscal 2017- Payouts Under Short-Term and Full Year Cash and Equity Bonus Programs [Member]  
Shares of Beneficial Interest, Cash | $ $ 2,000
Shares of Beneficial Interest, Equity | shares 1,500
Adam B. Remis [Member] | Fiscal 2018- Short-Term Cash and Equity Bonus Program [Member]  
Shares of Beneficial Interest, Cash | $ $ 10,000
Shares of Beneficial Interest, Equity | shares 5,000
Adam B. Remis [Member] | Fiscal 2018- Short-Term Cash and Equity Bonus Program [Member] | February 1, 2017 through May 31, 2017 [Member]  
Shares of Beneficial Interest, Cash | $ $ 2,000
Shares of Beneficial Interest, Equity | shares 1,500
Adam B. Remis [Member] | Fiscal 2018- Short-Term Cash and Equity Bonus Program [Member] | June 1, 2017 through December 31, 2017 [Member]  
Shares of Beneficial Interest, Cash | $ $ 4,000
Shares of Beneficial Interest, Equity | shares 2,000