Additional aggregate offering price.

No definition available.

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- Definition

Aggregate offering price.

+ References

No definition available.

+ Details

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- Definition

Commission percentage on gross proceeds from sale of shares.

+ References

No definition available.

+ Details

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- Definition

Equity offering.

+ References

No definition available.

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- Definition

The cash inflow from the additional capital contribution to the entity.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-Topic 230
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- Definition

Cash received on stock transaction after deduction of issuance costs.

+ References

No definition available.

+ Details

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- Definition

Price of a single share of a number of saleable stocks of a company.

+ References

No definition available.

+ Details

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- Definition

Number of new stock issued during the period.

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Equity - Controlled Equity Offering Sales Agreement - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions			3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2020	Mar. 06, 2020	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019	May 05, 2020	May 04, 2020	Aug. 17, 2018
Open Market Sale Agreement [Member]
Equity Offering [Line Items]
Number of shares of common stock sold in public offering	3,712,359		0	0	0	0
Net proceeds from sale of common stock							$ 46.2
Maximum [Member] \| Jefferies LLC [Member] \| Open Market Sale Agreement [Member]
Equity Offering [Line Items]
Aggregate offering price										$ 75.0
Percentage of commission of gross proceeds from the sale of Shares					3.00%
Maximum [Member] \| Jefferies LLC [Member] \| Open Market Sale Agreement Amendment [Member]
Equity Offering [Line Items]
Aggregate offering price								$ 175.0	$ 75.0
Additional aggregate offering price								$ 100.0
Common Stock [Member]
Equity Offering [Line Items]
Number of shares of common stock sold in public offering		7,187,500			7,188,000
Public offering price of common shares		$ 24.00
Net proceeds after deducting underwriting discounts, commissions and offering expenses		$ 161.8