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Shares Issued through Equity Offering Program (Details)	3 Months Ended
	Mar. 31, 2019 USD ($) shares
Shares Issued through Equity Offering Program
Number of shares sold (in shares) | shares	37,000
Proceeds from sale of shares, net of commission and before offering costs	$ 1,084,000
Payment of commissions on sale of shares	11,000
Payment of offering costs on sale of shares	$ 45,000

X

- Definition

The cash outflow for commissions incurred directly with the issuance of an equity security.

+ References

No definition available.

+ Details

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X

- Definition

The cash outflow for offering costs incurred directly with the issuance of an equity security.

+ References

No definition available.

+ Details

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- References

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X

- Definition

Represents the net proceeds after commissions but before offering costs from new stocks issued during the period.

+ References

No definition available.

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X

- Definition

Number of new stock issued during the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
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-URI http://asc.fasb.org/extlink&oid=109259400&loc=d3e21463-112644

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
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