Income Taxes - Effective Tax Rate Reconciliation (Details)	1 Months Ended	11 Months Ended	12 Months Ended
	Feb. 03, 2018	Dec. 31, 2017	Feb. 03, 2018	Jan. 28, 2017	Jan. 30, 2016
Effective Income Tax Rate Reconciliation, Percent [Abstract]
Taxes at federal statutory rates	21.00%	35.00%	33.80%	35.00%	35.00%
State income taxes, net of federal tax benefit			40.40%	11.90%	(0.60%)
Reestablishment of state net operating losses			0.00%	0.00%	6.00%
Provision to return true-up			(41.60%)	18.10%	0.00%
Non-cash stock option vesting expense			(12.20%)	(2.30%)	(1.90%)
FCC license deferred tax liability impact on valuation allowance			100.40%	(9.40%)	(6.50%)
Impact of Tax Act on deferred tax valuation			(1382.30%)	(0.00%)	(0.00%)
Valuation allowance and NOL carryforward benefits			1365.30%	(60.90%)	(44.20%)
Other			0.50%	(2.50%)	4.90%
Effective tax rate			104.30%	(10.10%)	(7.30%)