Supplemental Balance Sheet Information - Other non-current liabilities (Details) - USD ($) $ in Thousands	May 30, 2020	Feb. 29, 2020	Jun. 01, 2019
Inventory Disclosure [Abstract]
Deferred benefit from New Market Tax Credit transactions	$ 15,717	$ 15,717
Retirement plan obligations	8,242	8,294
Deferred compensation plan	8,298	8,452
Deferred tax liabilities	13,915		$ 7,940
Other	21,324	16,459
Total other non-current liabilities	$ 67,496	$ 56,862

Additional Other Liabilities, Noncurrent

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The noncurrent portion of the reserve for accumulated deferred investment tax credits as of the balance sheet date. This is the remaining investment credit, which will reduce the cost of services collected from ratepayers by a ratable portion over the investment's regulatory life.

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Aggregate carrying value as of the balance sheet date of the liabilities for all deferred compensation arrangements payable beyond one year (or the operating cycle, if longer).

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Amount of deferred tax liability attributable to taxable temporary differences.

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Amount of expenses incurred but not yet paid classified as other, due after one year or the normal operating cycle, if longer.

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Amount of liability, recognized in statement of financial position, for defined benefit pension and other postretirement plans, classified as noncurrent.

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