Date when the business acquisition agreement was executed, in CCYY-MM-DD format.

No definition available.

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- Definition

Number of shares of equity interests issued or issuable to acquire entity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
-Paragraph 1
-Subparagraph (b)(4)
-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479

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- Definition

Price of a single share of a number of saleable stocks paid or offered to be paid in a business combination.

+ References

No definition available.

+ Details

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- Definition

Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition

Face amount or stated value per share of common stock.

+ References

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- Definition

Number of shares issued for each share of convertible preferred stock that is converted.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition

Describes the declaration as being a special dividend (over and above the normal dividend); as the annual, semi-annual, quarterly dividend, or other normal periodic dividend; or as some other type of dividend.

+ References

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- Definition

Amount of current borrowing capacity under the credit facility considering any current restrictions on the amount that could be borrowed (for example, borrowings may be limited by the amount of current assets), but without considering any amounts currently outstanding under the facility.

+ References

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- Definition

The percentage rate used to calculate dividend payments on preferred stock.

+ References

No definition available.

+ Details

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- Definition

Date the preferred stock has been redeemed, in CCYY-MM-DD format.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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-Name Accounting Standards Codification
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- Definition

The price per share at which the preferred stock of an entity that has priority over common stock in the distribution of dividends and in the event of liquidation of the entity is redeemed or may be called at. The redemption features of this preferred stock are solely within the control of the issuer.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition

The cash outflow for a borrowing supported by a written promise to pay an obligation.

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 10
-Section 45
-Paragraph 15
-Subparagraph (b)
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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

No definition available.

+ Details

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- Definition

Per share amount of par value or stated value of stock classified as temporary equity. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
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- Definition

The number of securities classified as temporary equity that have been sold (or granted) to the entity's shareholders. Securities issued include securities outstanding and securities held in treasury. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer.

+ References

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- Definition

Amendment effective date.

+ References

No definition available.

+ Details

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Data Type:	xbrli:dateItemType
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- Definition

Common stock dividend rate percentage.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Number of shares approved.

+ References

No definition available.

+ Details

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Period Type:	duration

- Definition

Number of shares approved percent.

+ References

No definition available.

+ Details

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Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration

- Definition

Preferred stock converted into common stock conversion price per share.

+ References

No definition available.

+ Details

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Data Type:	num:perShareItemType
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Period Type:	instant

- Definition

Redemption extension period.

+ References

No definition available.

+ Details

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Data Type:	xbrli:durationItemType
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Period Type:	duration

- Definition

Reinsurance agreement termination date.

+ References

No definition available.

+ Details

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Balance Type:	na
Period Type:	duration

- Definition

Reinsurance agreement termination, value approved for transfer.

+ References

No definition available.

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Related party transaction remaining balance in trust.

+ References

No definition available.

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- Details

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Subsequent Events - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands						12 Months Ended
	Feb. 12, 2018	Feb. 02, 2018	Jan. 05, 2018	Dec. 11, 2017	Dec. 08, 2017	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015	Feb. 16, 2018	Feb. 05, 2018	May 11, 2015	Jan. 05, 2015	Mar. 19, 2012
Subsequent Event [Line Items]
Conversion of shares											1
Common stock, par value						$ 0.00001	$ 0.00001				$ 0.00001		$ 0.00001
Principal payments						$ 18,774	$ 2,969	$ 10,395
Subsequent Event [Member] \| Merger Agreement [Member]
Subsequent Event [Line Items]
Merger agreement date	Feb. 12, 2018
Share price, without interest	$ 18.00
Aggregate amount of merger consideration	$ 1,200,000
Principal payments	1,900,000
Debt commitments, obtained from lenders	$ 2,750,000
Subsequent Event [Member] \| Merger Agreement [Member] \| WMIH Common Stock [Member]
Subsequent Event [Line Items]
Stock issued, fully paid and nonassessable shares	12.7793
Common stock, par value	$ 0.00001
Subsequent Event [Member] \| WMMRC [Member]
Subsequent Event [Line Items]
Reinsurance agreement termination date		Feb. 02, 2018
Related party transaction, remaining amount transferred										$ 230
Reinsurance agreement termination, value approved to request for transfer									$ 4,200
Redeemable Convertible Series B Preferred Stock [Member]
Subsequent Event [Line Items]
Amendment Effective Date						Jan. 05, 2018
Preferred stock, shares issued						600,000	600,000	600,000				600,000
Preferred stock dividend rate						3.00%	3.00%	3.00%
Redeemable Convertible preferred stock, par value						$ 0.00001	$ 0.00001
Preferred stock, redemption date						Oct. 05, 2019
Redeemable Convertible Series B Preferred Stock [Member] \| Subsequent Event [Member] \| Merger Agreement [Member]
Subsequent Event [Line Items]
Preferred stock converted into common stock conversion price per share	$ 1.35
Certificate of Amendment [Member]
Subsequent Event [Line Items]
Amendment Effective Date					Jan. 05, 2018
Preferred stock, redemption date					Oct. 05, 2019
Redemption extension period					6 months
Conversion price					$ 1.35
Dividend payable, term					semi-annual
Common stock dividend rate					5.00%
Certificate of Amendment [Member] \| Redeemable Convertible Series B Preferred Stock [Member]
Subsequent Event [Line Items]
Amendment Effective Date				Jan. 05, 2018
Number of shares approved					308,731
Number of shares approved, percent					51.00%
Preferred stock, shares issued					600,000
Preferred stock dividend rate					3.00%
Redeemable Convertible preferred stock, par value					$ 0.00001
Conversion of shares					19.04762
Certificate of Amendment [Member] \| Redeemable Convertible Series B Preferred Stock [Member] \| Subsequent Event [Member]
Subsequent Event [Line Items]
Preferred stock dividend rate			5.00%
Amended and Restated Certificate of Incorporation [Member]
Subsequent Event [Line Items]
Preferred stock, redemption date					Jan. 05, 2018