Related Party Transactions - Additional Information (Details)	3 Months Ended	6 Months Ended
Jun. 30, 2016 USD ($)	Jun. 30, 2016 USD ($)
Related Party Transaction [Line Items]
Aggregate compensation and benefits accrued expense paid	$ 131,242	$ 261,315
Aggregate rent and overhead accrued expense paid	$ 15,583	34,504
Automobile allowance reimbursed		1,878
Maximum
Related Party Transaction [Line Items]
Monthly automobile allowance		$ 1,000
PEO
Related Party Transaction [Line Items]
Percentage ownership by affiliates	2.00%	2.00%
MMC and Winco
Related Party Transaction [Line Items]
Reimbursements payable	$ 2,767	$ 2,767
Tuxis
Related Party Transaction [Line Items]
Termination of notice period		10 days
Monthly rental charges		$ 1,000
Payments for rent	$ 3,000	$ 6,000

Aggregate rent and overhead accrued expense paid.

No definition available.

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Namespace Prefix:	self_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Automobile allowance.

+ References

No definition available.

+ Details

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Namespace Prefix:	self_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Automobile allowance reimbursement.

+ References

No definition available.

+ Details

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Namespace Prefix:	self_
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Balance Type:	debit
Period Type:	duration

- Definition

Monthly rental charges.

+ References

No definition available.

+ Details

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Namespace Prefix:	self_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Notice period to termination of rental agreement.

+ References

No definition available.

+ Details

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Namespace Prefix:	self_
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- Definition

Reimbursements payable.

+ References

No definition available.

+ Details

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Data Type:	xbrli:monetaryItemType
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- Definition

Costs and payments related to employee benefits and equity-based compensation, such as pension expense and contributions, other postretirement benefits expense and payments, stock or unit options expense, and amortization of restricted stock or unit.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585

+ Details

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Balance Type:	debit
Period Type:	duration

- Definition

The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity.

+ References

No definition available.

+ Details

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

- Definition

Cash payments to lessor's for use of assets under operating leases.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 25
-Subparagraph (g)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3536-108585

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Details

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- Details

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Namespace Prefix:
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- Details

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Namespace Prefix:
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- Details

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