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Subsequent Event (Details) - USD ($) $ in Millions | May 06, 2018 | May 18, 2017
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LIBOR |  |
Subsequent Event |  |
Debt instrument applicable margin |  | 6.25%
Subsequent Event | LIBOR |  |
Subsequent Event |  |
Debt instrument applicable margin | 5.75% |
Subsequent Event | Wells Fargo New Line of Credit |  |
Subsequent Event |  |
Net borrowing available under revolving line of credit | $ 250.0 |
Subsequent Event | Wells Fargo New Term Loan [Member] |  |
Subsequent Event |  |
Additional term loan provision | $ 40.0 |

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- Definition The aggregate borrowing capacity under the credit facility, consisting of the maximum borrowing capacity plus the contingent increase, if any one or more of the existing banks or new banks agree to provide such increased commitment amount. + References No definition available. + Details
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Namespace Prefix: | spwh_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
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- 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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- Definition Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.19(b),22(b)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- 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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Period Type: | duration

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- Details
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- Details
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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
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Namespace Prefix: |
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Balance Type: |
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