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Subsequent Events (Details) - USD ($) $ / shares in Units, $ in Millions	1 Months Ended
	Apr. 30, 2019	May 07, 2019	Mar. 29, 2019
Preferred Equity Distribution Agreement
Subsequent Event [Line Items]
Preferred stock available for future issuance, value			$ 50.0
Subsequent Event | Preferred Equity Distribution Agreement | Series B and C Preferred Stock
Subsequent Event [Line Items]
Shares issued (in shares)	213,753.00
Sale of stock, price per share (in dollars per share)	$ 24.78
Proceeds from issuance of shares	$ 5.2
Preferred stock available for future issuance, value		$ 44.7
Subsequent Event | Common Equity Distribution Agreement
Subsequent Event [Line Items]
Shares issued (in shares)	2,260,200
Sale of stock, price per share (in dollars per share)	$ 6.12
Proceeds from issuance of shares	$ 13.6
Common stock reserved for issuance		$ 72.5

X

- Definition

Aggregate value of common shares reserved for future issuance.

+ References

No definition available.

+ Details

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X

- Definition

Preferred Stock, Shares Reserved For Future Issuance, Value

+ References

No definition available.

+ Details

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X

- Definition

Cash received on stock transaction after deduction of issuance costs.

+ References

No definition available.

+ Details

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X

- Definition

The number of shares issued or sold by the subsidiary or equity method investee per stock transaction.

+ References

No definition available.

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- Definition

Per share amount received by subsidiary or equity investee for each share of common stock issued or sold in the stock transaction.

+ References

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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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- Details

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- Details

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