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Loss Per Share and Per Unit - Additional Information (Detail) | 9 Months Ended
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Sep. 30, 2019 shares
ESOP [Member] |
Earnings Per Share [Line Items] |
Number of ESOP units | 0

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- Definition Earnings per share. + References No definition available. + Details
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Namespace Prefix: | soho_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition The sum of dilutive potential common shares or units used in the calculation of the diluted per-share or per-unit computation. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

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