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Subsequent Event - Additional Information (Detail) - Subsequent Event	Apr. 24, 2020 shares $ / shares	Apr. 13, 2020
Subsequent Event [Line Items]
Rights expiration description		The rights will expire on the earliest of (i) the close of business on April 13, 2023, (ii) the final adjournment of the 2020 annual meeting if the stockholders fail to ratify the Plan at such meeting, (iii) the time at which the rights are redeemed or exchanged, or (iv) the time at which the Board determines that the Tax Attributes are fully utilized, expired, no longer necessary or become limited under Section 382
Series A Junior Participating Preferred Stock
Subsequent Event [Line Items]
Number of shares allowed to purchase for each right | shares	0.001
Par value of shares allowed to purchase under right
Purchase price of each right	38.00
Price of redemption of each right	$ 0.001
Beneficial Owner
Subsequent Event [Line Items]
Percentage of ownership interest subject to dilution		4.99%
Equity method ownership percentage		4.99%
Percentage of additional ownership interest to be acquired by existing shareholders subject to dilution		0.50%

X

- Definition

Number of shares allowed to purchase under rights for each share.

+ References

No definition available.

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- Definition

Percentage of additional shares to be acquired by existing shareholders subject to dilution.

+ References

No definition available.

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- Definition

Percentage of ownership of outstanding common stock subject to dilutuion.

+ References

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- Definition

Redemption of rights price per share.

+ References

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- Definition

Rights expiration description

+ References

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- Definition

The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=114001798&loc=d3e33918-111571

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- Definition

Face amount per share of no-par value preferred stock nonredeemable or redeemable solely at the option of the issuer.

+ 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(28))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- Definition

Face amount or stated value per share of preferred stock nonredeemable or redeemable solely at the option of the issuer.

+ 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(28))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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- 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

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