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Subsequent Events - Additional Information (Details)	Mar. 27, 2020 USD ($) shares	Mar. 26, 2020 Director	Dec. 31, 2019 shares	Dec. 31, 2018 shares
Subsequent Event [Line Items]
Common stock, shares issued			29,835,183	29,450,035
Subsequent Event
Subsequent Event [Line Items]
Number of board of directors | Director		3
Stock Purchase Agreement | Subsequent Event | Lincoln Park
Subsequent Event [Line Items]
Value of shares issued | $	$ 5,000,000
Common stock, shares issued	461,676
Stock Purchase Agreement | Subsequent Event | Lincoln Park | Maximum
Subsequent Event [Line Items]
Value of shares issued | $	$ 25,000,000
Additional commitment shares issued on pro-rata	230,838

X

- Definition

Additional commitment shares issued.

+ References

No definition available.

+ Details

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- Definition

Number of board of directors.

+ References

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- Definition

Total number of common shares of an entity that have been sold or granted to shareholders (includes common shares that were issued, repurchased and remain in the treasury). These shares represent capital invested by the firm's shareholders and owners, and may be all or only a portion of the number of shares authorized. Shares issued include shares outstanding and shares held in the treasury.

+ 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

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- Definition

Aggregate par or stated value of issued nonredeemable common stock (or common stock redeemable solely at the option of the issuer). This item includes treasury stock repurchased by the entity. Note: elements for number of nonredeemable common shares, par value and other disclosure concepts are in another section within stockholders' equity.

+ 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

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X

- Definition

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

+ References

No definition available.

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