Equity Method Investment (Details) - USD ($) $ in Thousands	Jul. 18, 2019	Jan. 31, 2020	Aug. 02, 2019
Equity method investments [Abstract]
Investment in unconsolidated subsidiary		$ 79,536	$ 89,100	[1]
PBS HC [Member]
Equity method investments [Abstract]
Percentage of economic ownership interest	58.60%
Percentage of voting ownership Interest	49.70%
Investment in unconsolidated subsidiary		79,536	89,100
Purchase of promissory notes	$ 6,900
Additional funding provided	8,000
Funding amount paid		$ 45,500	$ 12,500
PBS HC [Member] | Maximum [Member]
Equity method investments [Abstract]
Agreed funding amount	$ 51,000

[1] This Condensed Consolidated Balance Sheet has been derived from the audited Consolidated Balance Sheet as of August 2, 2019, as filed with the Securities and Exchange Commission in the Company’s Annual Report on Form 10-K for the fiscal year ended August 2, 2019.