Basis of Presentation New Accounting Pronouncements (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2017	Oct. 01, 2016	Sep. 30, 2017	Oct. 01, 2016
New Accounting Pronouncements [Abstract]
Excess tax benefits, included in income tax expense	$ 0.2	$ 0.0	$ 1.4	$ 0.0
Excess Tax Benefit from Share-based Compensation		$ 0.2		$ 2.3

Amount of cash outflow for realized tax benefit related to deductible compensation cost reported on the entity's tax return for equity instruments in excess of the compensation cost for those instruments recognized for financial reporting purposes.

No definition available.

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Namespace Prefix:	scss_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration