COMMITMENTS AND CONTINGENCIES (Details) - USD ($)	3 Months Ended	6 Months Ended
Dec. 31, 2016	Mar. 31, 2018
COMMITMENTS AND CONTINGENCIES (Details) [Line Items]
Lease Expiration Year		2032
Sequoia DC [Member]
COMMITMENTS AND CONTINGENCIES (Details) [Line Items]
Lessee, Operating Lease, Renewal Term		15 years
Lease Expiration Date		Nov. 30, 2032
Operating Leases, Future Minimum Payments Due		$ 1,200,000
Impairment Losses Related to Real Estate Partnerships	$ 283,000
Sequoia DC [Member] \| Additional Lease Extension Option [Member]
COMMITMENTS AND CONTINGENCIES (Details) [Line Items]
Lessee, Operating Lease, Renewal Term		5 years
Sequoia DC [Member] \| Leasehold Improvements [Member]
COMMITMENTS AND CONTINGENCIES (Details) [Line Items]
Construction and Development Costs		$ 11,000,000

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- Definition

Lease expiration year.

+ References

No definition available.

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- Definition

The aggregate costs related to construction and development services during the reporting period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.2)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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- Definition

Impairment losses measured as the amount by which the carrying amount of the business or real estate partnerships exceeds the fair value of the business or partnership.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (b)
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- Definition

Date which lease or group of leases is set to expire, in CCYY-MM-DD format.

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No definition available.

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Term of lessee's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
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Amount of required minimum rental payments for leases having an initial or remaining non-cancelable letter-terms in excess of one year.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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