Employee Stock Purchase Plan, Maximum Fair Value of Shares That May Be Purchased Per Calendar Year

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- Definition

Employee Stock Purchase Plan, Maximum Percentage of Compensation to Purchase Shares By Eligible Participants

+ References

No definition available.

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- Definition

Share Based Compensation Arrangement by Share Based Payment Award, Options, Expiration Term

+ References

No definition available.

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- Definition

Share Based Compensation Arrangement By Share Based Payment Award, Options, Vesting Period

+ References

No definition available.

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- Definition

Share Based Compensation Arrangement by Share Based Payment Awards Performance Period

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- Definition

Share Based Compensation Arrangement By Share Based Payment Award Stock Price Percentage Of Fair Market Value

+ References

No definition available.

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- Definition

Unrecognized cost of unvested share-based compensation awards.

+ 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 (i)

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

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- Definition

Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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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

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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

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (a)(1)

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

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- Definition

Discount rate from fair value on offering 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

Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

+ 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 (d)(2)

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

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- Definition

The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested).

+ 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 (a)(3)

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

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- Definition

Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into 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

-Subparagraph (d)(2)

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

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- Definition

The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

+ 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 (d)(1)

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

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- Definition

Number of shares issued during the period as a result of an employee stock purchase plan.

+ References

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 04

-Article 3

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section 50

-Paragraph 2

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 505

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.3-04)

-URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770

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-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 02

-Paragraph 29, 30

-Article 5

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Equity Compensation - Additional Information (Detail) (USD $)	0 Months Ended	12 Months Ended			0 Months Ended
	Dec. 31, 2014	Feb. 28, 2015	Mar. 01, 2014	Mar. 02, 2013	Jan. 01, 2015	Jul. 31, 2009
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation		$ 8,193,000us-gaap_ShareBasedCompensation	$ 7,068,000us-gaap_ShareBasedCompensation	$ 6,612,000us-gaap_ShareBasedCompensation
Options vesting period		4 years
Options expiration term		10 years
Estimated weighted-average fair value of individual options granted		$ 8.40	$ 8.24	$ 9.56
Total intrinsic value of options exercised		6,736,000	8,400,000	6,400,000
Employee Stock Purchase Plan, maximum percentage of annual compensation to acquire common stock	10.00%
Employee Stock Purchase Plan, percentage of market price to acquire common stock	85.00%
Employee Stock Purchase Plan, shares purchased		29,000	31,000	33,000
Employee Stock Purchase Plan, percentage of discount on compensation expense		15.00%
Stock Incentive Plan 2009
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized						6,500,000
Stock Incentive Plan 2009 \| All awards other than options and stock appreciation rights
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized						2,500,000
Restricted stock awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation		4,200,000	3,500,000	3,800,000
Total unrecognized compensation cost		6,000,000
Total unrecognized compensation cost, weighted average recognition period		1 year 10 months
Total fair value of awards vested		3,400,000
Restricted stock awards \| Employees
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Performance-based awards performance period		3 years
Share-based compensation vesting period		3 years
Restricted stock awards \| Employees \| Cliff-vesting
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation vesting period		3 years
Restricted stock awards \| Non-employee Directors \| Cliff-vesting
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation vesting period		1 year
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation		3,900,000	3,500,000	2,700,000
Total unrecognized compensation cost		7,000,000
Total unrecognized compensation cost, weighted average recognition period		1 year 8 months 27 days
Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares authorized		2,400,000
Share-based compensation		100,000	100,000	100,000
Employee Stock Purchase Plan, maximum percentage of annual compensation to acquire common stock					15.00%
Maximum \| Employee Stock Purchase Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Employee stock purchase plan ,maximum fair value of shares that may be purchased per calendar year	10,000				25,000