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Subsequent Events (Details) - Term Loan - Subsequent Event	May 17, 2017	May 16, 2017
Subsequent Event [Line Items]
Average quarterly increase	0.75
Minimum
Subsequent Event [Line Items]
Leverage ratio in each of the remaining quarters	0.2
Maximum
Subsequent Event [Line Items]
Leverage ratio in each of the remaining quarters	1.3
LIBOR
Subsequent Event [Line Items]
Increase in basis points	0.0025%
Debt instrument applicable margin	6.25%	6.00%
LIBOR floor	1.25%	1.25%

X

- Definition

Percentage of increase in basis points during the reporting period.

+ References

No definition available.

+ Details

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Namespace Prefix:	spwh_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Represents the ratio of debt to consolidated adjusted earnings before, interest, taxes, depreciation and amortization allowed under the terms of the senior credit facilities' covenants, in each of the remaining quarters.

+ References

No definition available.

+ Details

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Namespace Prefix:	spwh_
Data Type:	xbrli:pureItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Percentage of average quarterly increase in debt leverage ratio.

+ References

No definition available.

+ Details

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Namespace Prefix:	spwh_
Data Type:	xbrli:pureItemType
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Period Type:	duration

X

- Definition

LIBOR floor rate of the debt instrument.

+ References

No definition available.

+ Details

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Namespace Prefix:	spwh_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

+ References

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

+ Details

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Data Type:	xbrli:stringItemType
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Period Type:	duration

X

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

X

- Details

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Namespace Prefix:
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Balance Type:
Period Type:

X

- Details

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Namespace Prefix:
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Period Type:

X

- Details

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Namespace Prefix:
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Period Type:

X

- Details

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Namespace Prefix:
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Period Type: