Asset Sale to WBA - Operating results of discontinued operations (Details) - USD ($) $ in Thousands	3 Months Ended
	Jun. 01, 2019	Jun. 02, 2018
Income statement disclosures
Revenues	$ (88)	$ 23,400
Costs and expenses:
Cost of revenues	265	17,081
Selling, general and administrative expenses	486	13,875
Loss on debt retirements, net		4,570
Interest expense		4,615
Gain on stores sold to Walgreens Boots Alliance		(360,557)
Gain on sale of assets, net	(522)
Cost and expenses	229	(320,416)
(Loss) income from discontinued operations before income taxes	(317)	343,816
Income tax expense	3	87,673
Net (loss) income from discontinued operations, net of tax	$ (320)	$ 256,143