Summary of Significant Accounting Policies - Net Income (Loss) Per Common Share (Details) - USD ($)	3 Months Ended								12 Months Ended
	Feb. 02, 2019	Nov. 03, 2018	Aug. 04, 2018	May 05, 2018	Feb. 03, 2018	Oct. 28, 2017	Jul. 29, 2017	Apr. 29, 2017	Feb. 02, 2019	Feb. 03, 2018	Jan. 28, 2017
Numerator:
Net income (loss) (a)									$ (22,157,000)	$ 143,000	$ (8,745,000)
Earnings allocated to participating share awards (b)									0	0	0
Net income (loss) attributable to common shares - Basic and diluted									$ (22,157,000)	$ 143,000	$ (8,745,000)
Denominator:
Weighted average number of common shares outstanding — Basic	66,571,000	66,352,000	66,009,000	65,361,000	65,279,000	65,191,000	64,091,000	60,919,000	66,073,206	63,870,046	59,784,594
Dilutive effect of stock options, non-vested shares and warrants (b)									0	98,253	0
Weighted average number of common shares outstanding — Diluted	66,571,000	66,352,000	66,009,000	65,361,000	65,672,000	65,191,000	64,091,000	60,919,000	66,073,206	63,968,299	59,784,594
Net income (loss) per common share	$ (0.15)	$ (0.14)	$ 0.00	$ (0.05)	$ 0.10	$ (0.02)	$ (0.03)	$ (0.05)	$ (0.34)	$ 0.00	$ (0.15)
Net income (loss) per common share — assuming dilution	$ (0.15)	$ (0.14)	$ 0.00	$ (0.05)	$ 0.10	$ (0.02)	$ (0.03)	$ (0.05)	$ (0.34)	$ 0.00	$ (0.15)
Executive and management transition costs	$ 661,000	$ 408,000		$ 1,024,000	$ 174,000	$ 893,000	$ 572,000	$ 506,000	$ 2,093,000	$ 2,145,000	$ 4,411,000
Gain on sale of television station	$ 665,000				551,000				665,000	551,000	0
Loss on debt extinguishment					$ 323,000	$ 221,000		$ 913,000	0	1,457,000	0
Distribution facility consolidation and technology upgrade costs									$ 0	$ 0	$ 677,000
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount									340,000		119,000