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Capital - Additional Information (Detail) $ / shares in Units, $ in Millions	12 Months Ended	18 Months Ended
	Dec. 31, 2015 program $ / shares	Dec. 31, 2013 shares	Jan. 27, 2015 shares	Jan. 28, 2014 shares	Jan. 29, 2013 shares	Jun. 19, 2012 USD ($)
Disclosure Capital Additional Information [Abstract]
Announcement of common stock repurchase program | $						$ 50.0
Number of shares authorized to be repurchased			25,000,000.0	25,000,000.0	25,000,000.0
Number of repurchase programs | program	3
Stock repurchased (in shares)		16,619,205
Average price per share | $ / shares	$ 7.55

X

- Definition

Disclosure - Capital - Additional Information [Abstract]

+ References

No definition available.

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- Definition

Stock Repurchase Program, Number of Repurchase Programs

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No definition available.

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- Definition

Amount of stock repurchase plan authorized.

+ References

No definition available.

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- Definition

The number of shares authorized to be repurchased by an entity's Board of Directors under a stock repurchase plan.

+ References

No definition available.

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- Definition

Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6928386&loc=d3e21463-112644

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 04
-Article 3

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Regulation S-X (SX)
-Number 210
-Section 02
-Paragraph 29, 30
-Article 5

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- Definition

Total cost of shares repurchased divided by the total number of shares repurchased.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6405813&loc=d3e23239-112655

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