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Leases - Lease assets and liabilities (Details) - USD ($)	Sep. 30, 2019	Dec. 31, 2018
Current
Prepaid expenses and other current assets	$ 57,249
Noncurrent
Operating lease right-of-use assets	4,393,737	$ 0
Total lease right-of-use assets	4,450,986
Current
Current maturities of operating leases	647,709	0
Noncurrent
Noncurrent operating leases	3,809,573	$ 0
Total lease liabilities	$ 4,457,282
Operating leases	18 years
Operating leases	4.61%

X

- Definition

Amount of Operating Lease Assets Current.

+ References

No definition available.

+ Details

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X

- Definition

Amount of lessee's right to use underlying asset net under operating lease.

+ References

No definition available.

+ Details

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- References

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- References

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- Definition

Present value of lessee's discounted obligation for lease payments from operating lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977

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X

- Definition

Present value of lessee's discounted obligation for lease payments from operating lease, classified as current.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 45
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=77888419&loc=SL77918627-209977

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- Definition

Present value of lessee's discounted obligation for lease payments from operating lease, classified as noncurrent.

+ References

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-Publisher FASB
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- Definition

Amount of lessee's right to use underlying asset under operating lease.

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- Definition

Weighted average discount rate for operating lease calculated at point in time.

+ References

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- Definition

Weighted average remaining lease term for operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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