Leases - Lessee Operating Lease Right of Use Assets and Liabilities (Parenthetical) (Detail) - USD ($)	Jan. 31, 2021	May 03, 2020		Feb. 02, 2020
Lessee Lease Description [Line Items]
Right of use assets	$ 6,206,000	$ 3,903,000		$ 5,524,000	[1]
Right of use asset	6,206,000	3,903,000	[2]	4,574,000
Noncurrent assets - discontinued operation				9,241,000
Operating lease liabilities	6,452,000			5,400,000
Operating lease liability - current	2,273,000	1,805,000	[2]	2,033,000
Current liabilities - Discontinued operation				2,094,000
Operating lease liability - long-term	$ 4,179,000	$ 2,016,000	[2]	2,384,000
Noncurrent liabilities - discontinued operation				3,501,000
Right of Use Assets [Member]
Lessee Lease Description [Line Items]
Right of use asset				4,600,000
Noncurrent Assets Discontinued Operation [Member]
Lessee Lease Description [Line Items]
Noncurrent assets - discontinued operation				950,000
Operating Lease Liability Current [Member]
Lessee Lease Description [Line Items]
Operating lease liability - current				2,000,000.0
Current Liabilities - Discontinued Operation [Member]
Lessee Lease Description [Line Items]
Current liabilities - Discontinued operation				194,000
Operating Lease Liability Noncurrent [Member]
Lessee Lease Description [Line Items]
Operating lease liability - long-term				2,400,000
Noncurrent Liabilities Discontinued Operation [Member]
Lessee Lease Description [Line Items]
Noncurrent liabilities - discontinued operation				$ 776,000

[1] As of February 2, 2020, right of use assets totaled $5.5 million, of which $4.6 million and $950,000 were classified as (i) right of use asset and (ii) within noncurrent assets – discontinued operation, respectively, in the accompanying Consolidated Balance Sheets.  As of February 2, 2020, operating lease liabilities totaled $5.4 million, of which $2.0 million, $194,000, $2.4 million, and $776,000 were classified as (i) operating lease liability – current, (ii) within current liabilities – discontinued operation, (iii) operating lease liability – long-term, and (iv) within noncurrent liabilities – discontinued operation, respectively, in the accompanying Consolidated Balance Sheets.

[2] Derived from audited financial statements.