Future Minimum Rental Payments under Related Party Leases (Detail) $ in Thousands	Feb. 28, 2019 USD ($)
Schedule Of Future Minimum Rental Payments For Operating Leases [Line Items]
2020	$ 577
2021	572
2022	572
2023	273
2024	190
2025	189
Operating Leases, Future Minimum Payments Due, Total	2,373
Chief Executive Officer and Ordway Properties, LLC
Schedule Of Future Minimum Rental Payments For Operating Leases [Line Items]
2020	390
2021	390
2022	390
2023	256
2024	190
2025	189
Operating Leases, Future Minimum Payments Due, Total	$ 1,805

Amount of required minimum rental payments for leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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