Maximum exercisable period for stock options.

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- Definition

Share based compensation arrangement by share based payment award number of underlying shares available.

+ References

No definition available.

+ Details

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- Definition

Share based compensation arrangement by share based payment award percentage by which tangible book value must increase.

+ References

No definition available.

+ Details

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- Definition

Share based compensation arrangement by share based payment award receipt deferral percentage.

+ References

No definition available.

+ Details

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- Definition

Share-based compensation arrangement by share based payment involuntary termination age.

+ References

No definition available.

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- Definition

Share-based compensation arrangement by share based payment participant vested in annual deferral accounts.

+ References

No definition available.

+ Details

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- Definition

Share-based compensation arrangement by share based payment second vesting requirement for voting common stock per share.

+ References

No definition available.

+ Details

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- Definition

Share based compensation arrangements number of trading days for second vesting requirement.

+ References

No definition available.

+ Details

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- Definition

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SAB TOPIC 14.F)

-URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (h)(1)(i)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

Reference 4: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Staff Accounting Bulletin (SAB)

-Number Topic 14

-Section F

+ Details

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- Definition

The total fair value of shares issued during the period under a deferred compensation arrangement.

+ References

+ Details

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- Definition

Number of shares issued pursuant to the terms of a deferred compensation arrangement.

+ References

+ Details

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- Definition

Unrecognized cost of unvested share-based compensation awards.

+ References

+ Details

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- Definition

The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585

+ Details

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- Definition

Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

+ Details

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- Definition

Discount rate from fair value on purchase date that participants pay for shares.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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- Definition

Number of equity instruments other than options outstanding, including both vested and non-vested instruments.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)(i)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(1)(ii)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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Period Type:	instant

- Definition

Number of additional shares authorized for issuance under an established share-based compensation plan.

+ References

No definition available.

+ Details

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- Definition

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

+ References

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Period Type:	instant

- Definition

The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

+ References

+ Details

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- Definition

Purchase price of common stock expressed as a percentage of its fair value.

+ References

No definition available.

+ Details

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- Details

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Share-Based Compensation Plans - Additional Information (Detail) (USD $)	12 Months Ended			1 Months Ended
	Dec. 31, 2014 Age	Dec. 31, 2013	Dec. 31, 2012	Jan. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of stock options exercisable for more than ten years	0
Maximum exercisable period for stock options	10 years
Participant vested in an annual deferral accounts	100.00%
Involuntary termination	65
Compensation expense recognized	$ 5,237,000us-gaap_ShareBasedCompensation	$ 3,368,000us-gaap_ShareBasedCompensation	$ 2,014,000us-gaap_ShareBasedCompensation
Compensation expense unrecognized related to non-vested share-based compensation	9,300,000
Options vesting period	5 years
Second vesting requirement for voting common stock	$ 17.18
Consecutive trading days of voting common stock trades	5 days
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of stock options exercisable for more than ten years	13,683,000
2010 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fully diluted tangible book value	50.00%
Share based compensation arrangement by share based payment award upper limit of maximum number of shares of common stock available	3,666,667
2004 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares of common stock issued stock option plan	2,750,000
Aggregate number of shares of common stock available for grant	2,510,117
BRRP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Restricted stock units outstanding	170,429
BRRP \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Receipt deferral percentage under BRRP plan	25.00%
BRRP \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Receipt deferral percentage under BRRP plan	50.00%
ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock, Percent	85.00%
Share-based Compensation Arrangement by Share-based Payment Award, Discount from Market Price, Purchase Date	15.00%
Allocated Share-based Compensation Expense	12,000
Common Stock \| Director
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Deferred Compensation Arrangement with Individual, Shares Issued	28,235			28,095
Deferred Compensation Arrangement with Individual, Fair Value of Shares Issued	$ 500,000			$ 500,000