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Employee Benefit Plans (Details) (USD $) | 12 Months Ended
--- | ---
Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2009
Compensation and Retirement Disclosure [Abstract] |  |  |  |  |  |
Officer cash bonus target minimum | 30.00% |  |  |  |  |
Officer cash bonus target maximum | 130.00% |  |  |  |  |
Officer cash bonus performance factor minimum | 0.00% |  |  |  |  |
Officer cash bonus performance factor maximum | 200.00% |  |  |  |  |
Other management cash bonus target minimum | 10.00% |  |  |  |  |
Other management cash bonus target maximum | 30.00% |  |  |  |  |
Number of outstanding options and warrants | 1,224,455 |  | 1,495,196 |  |  |
Possible future share issuance authorized under equity incentive plan | 2,363,695 |  | 2,642,620 |  |  |
Total shares reserved for future issuance | 3,588,150 |  | 4,137,816 |  |  |
Possible future share issuance authorized under equity incentive plan restricted stock | 700,000 |  |  |  |  |
Possible future share issuance authorized under charter | 127,400,000 |  |  |  |  |
Stock-based compensation expense | $ 6,094,000 |  | $ 6,572,000 |  | $ 6,567,000 |
Total unrecognized stock-based compensation costs | 5,600,000 |  |  |  |  |
Weighted average remaining contractual term for recognition of unrecognized stock-based compensation costs (in years) | 2.1 |  |  |  |  |
Retirement Plan [Abstract] |  |  |  |  |  |
Retirement plan qualification years of service (in years) | 30 |  |  |  |  |
Retirement plan qualification age | 55 |  |  |  |  |
Retirement plan qualification minimum years of service (in years) | 10 |  |  |  |  |
2009 and prior retirement plan immediate vesting percentage | 100.00% |  |  |  |  |
Deferred Compensation [Abstract] |  |  |  |  |  |
Marketable securities of non-qualified deferred compensation plan fair value disclosure | 3,149,000 |  | 3,479,000 |  | 6,100,000 |
Non Qualified Deferred Compensation Obligation Fair Value Disclosure [Roll Forward] |  |  |  |  |  |
Beginning deferred compensation liability | 4,091,000 |  | 6,898,000 |  | 6,522,000 |
Contributions to deferred compensation plans | 545,000 |  | 229,000 |  | 0 |
Mark to market adjustment to deferred compensation | (119,000) |  | 246,000 |  | 1,497,000 |
Distributions from deferred compensation plans | (1,368,000) |  | (3,282,000) |  | (1,121,000) |
Ending deferred compensation liability | 3,149,000 |  | 4,091,000 |  | 6,898,000 |
Units of phantom stock discount | 15.00% |  |  |  |  |
Phantom stock dividend discount | 15.00% |  |  |  |  |
401(k) Savings Plan [Abstract] |  |  |  |  |  |
401(k) employer match percentage | 75.00% |  |  |  |  |
401(k) employer match salary limit percentage | 6.00% |  |  |  |  |
401(k) employer contribution | 1,100,000 |  | 1,000,000 |  | 1,000,000 |
Employee Stock Purchase Plan [Abstract] |  |  |  |  |  |
Employee stock purchase plan salary limit percentage | 25.00% |  |  |  |  |
Employee stock purchase plan market percentage | 85.00% |  |  |  |  |
Employee stock purchase plan average market price percentage | 85.00% |  |  |  |  |
Number of days at beginning of quarter used to calculate ESPP discount | 5 |  |  |  |  |
Number of days at end of quarter used to calculate ESPP discount | 5 |  |  |  |  |
Shares of Common Stock issued under the employee stock purchase plans | 30,826 |  | 27,378 |  | 37,287 |
Discount on newly issued shares expensed as additional compensation | 200,000 |  | 100,000 |  | 300,000 |
Stock Options [Member] |  |  |  |  |  |
Stock Option Activity Rollforward [Abstract] |  |  |  |  |  |
Balance of options outstanding | 1,480,196 | [1],[2] | 1,467,773 |  | 1,489,250 |
Options granted | 146,581 |  | 190,826 |  | 394,044 |
Options cancelled | 0 |  |  |  | (111,590) |
Options exercised | (417,322) |  | (178,403) |  | (303,931) |
Balance of options outstanding | 1,209,455 |  | 1,480,196 | [1],[2] | 1,467,773 |
Options outstanding, weighted average exercise price | $ 27.95 | [1],[2] | $ 27.15 |  | $ 28.74 |
Options granted, weighted average exercise price | $ 33.93 |  | $ 29.05 |  | $ 19.00 |
Options cancelled, weighted average exercise price | $ 0.00 |  |  |  | $ 27.65 |
Options exercised, weighted average exercise price | $ 26.79 |  | $ 22.54 |  | $ 24.18 |
Options outstanding, weighted average exercise price | $ 29.08 |  | $ 27.95 | [1],[2] | $ 27.15 |
Weighted average remaining life of outstanding options | 3.5 |  |  |  |  |
Options exercisable | 646,029 |  |  |  |  |
Weighted average exercise price | $ 31.01 |  |  |  |  |
Weighted average remaining life | 2.4 |  |  |  |  |
Intrinsic value | 1,100,000 |  |  |  |  |
Amount of exercisable options with prices higher than the market price of Company Common Stock | 252,277 |  |  |  |  |
Cash received or receivable from options exercised | 11,900,000 |  | 4,400,000 |  | 7,400,000 |
Total instrinsic value of options exercised | 3,000,000 |  | 1,700,000 |  | 2,000,000 |
Total intrinsic value of options outstanding | 3,300,000 |  | 7,200,000 |  | 10,300,000 |
Prior to 2005 Stock Options [Member] |  |  |  |  |  |
Compensation and Retirement Disclosure [Abstract] |  |  |  |  |  |
Vesting period of stock options issued (in years) | 4 |  |  |  |  |
Option expiration period (in years) | 10 |  |  |  |  |
Stock Option Activity Rollforward [Abstract] |  |  |  |  |  |
Period for absolute total return (in years) | 4 |  |  |  |  |
2005 and Subsequent Stock Options [Member] |  |  |  |  |  |
Compensation and Retirement Disclosure [Abstract] |  |  |  |  |  |
Vesting period of stock options issued (in years) | 4 |  |  |  |  |
Option expiration period (in years) | 7 |  |  |  |  |
Weighted average grant date fair value of each stock option granted (in dollars per option) | $ 6.47 |  | $ 4.96 |  | $ 1.82 |
Assumptions Used in Determining Fair Values of Options Granted: |  |  |  |  |  |
Risk free interest rate | 2.40% | [3] | 2.60% | [3] | 2.30% | [3]
Common stock dividend yield | 5.00% | [4] | 5.90% | [4] | 9.00% | [4]
Expected volatility rate | 32.50% | [5] | 32.20% | [5] | 29.90% | [5]
Average expected option life (in years) | 5.75 | [6] | 5.75 | [6] | 5.75 | [6]
Dividends paid for previous year | 1 |  |  |  |  |
Stock Option Activity Rollforward [Abstract] |  |  |  |  |  |
Period for absolute total return (in years) | 4 |  |  |  |  |
Time-Based Restricted Stock [Member] |  |  |  |  |  |
Stock Option Activity Rollforward [Abstract] |  |  |  |  |  |
Percentage of employees restricted stock vested per anniversary date | 25.00% |  |  |  |  |
Percentage of directors time-based restricted stock that vest each year after grant date | 25.00% |  |  |  |  |
Restricted Stock Activity Rollforward [Abstract] |  |  |  |  |  |
Balance of restricted stock outstanding | 264,326 |  | 316,074 |  | 329,795 |
Awarded and issued | 76,966 | [7] | 88,930 | [7] | 128,384 | [7]
Vested | (116,631) | [8] | (138,745) | [8] | (132,779) | [8]
Forfeited | 0 |  | (1,933) |  | (9,326) |
Balance of restricted stock outstanding | 224,661 |  | 264,326 |  | 316,074 |
Restricted stock outstanding, weighted average grant date fair value | $ 27.08 |  | $ 28.60 |  | $ 34.21 |
Awarded and issued, weighted average grant date fair value | $ 33.70 | [7] | $ 29.05 | [7] | $ 19.33 | [7]
Vested, weighted average grant date fair value | $ 30.64 | [8] | $ 31.81 | [8] | $ 33.38 | [8]
Forfeited, weighted average grant date fair value | $ 0.00 |  | $ 25.86 |  | $ 31.26 |
Restricted stock outstanding, weighted average grant date fair value | $ 28.02 |  | $ 27.08 |  | $ 28.60 |
Fair value at grant date of restricted stock issued | 2,600,000 |  | 2,600,000 |  | 2,500,000 |
Vesting date fair value of restricted stock | 3,900,000 |  | 4,300,000 |  | 2,900,000 |
Weighted average grant date fair value of restricted stock | $ 33.70 | [7] | $ 29.05 | [7] | $ 19.33 | [7]
Total Return-Based Restricted Stock [Member] |  |  |  |  |  |
Compensation and Retirement Disclosure [Abstract] |  |  |  |  |  |
Vesting period of stock options issued (in years) | 3 |  |  |  |  |
Assumptions Used in Determining Fair Values of Options Granted: |  |  |  |  |  |
Risk free interest rate | 1.00% | [9] | 1.30% | [9] | 1.30% | [9]
Common stock dividend yield | 5.40% | [4] | 5.60% | [4] | 7.60% | [4]
Expected volatility rate | 42.80% | [10] | 42.50% | [10] | 37.80% | [10]
Dividends paid for previous year | 1 |  |  |  |  |
Stock Option Activity Rollforward [Abstract] |  |  |  |  |  |
Period for absolute total return (in years) | 3 |  |  |  |  |
Percentage of return-based restricted stock issued to officers that will vest, minimum | 0.00% |  |  |  |  |
Percentage of return-based restricted stock issued to officers that will vest, maximum | 250.00% |  |  |  |  |
Restricted Stock Activity Rollforward [Abstract] |  |  |  |  |  |
Balance of restricted stock outstanding | 231,835 |  | 202,775 |  | 151,342 |
Awarded and issued | 57,386 | [11] | 77,624 | [11] | 127,594 | [11]
Vested | (66,417) | [12] | (47,257) | [12] | (68,929) | [12]
Forfeited | (99,975) |  | (1,307) |  | (7,232) |
Balance of restricted stock outstanding | 122,829 |  | 231,835 |  | 202,775 |
Restricted stock outstanding, weighted average grant date fair value | $ 21.03 |  | $ 22.05 |  | $ 33.39 |
Awarded and issued, weighted average grant date fair value | $ 41.02 | [11] | $ 29.05 | [11] | $ 15.01 | [11]
Vested, weighted average grant date fair value | $ 13.79 | [12] | $ 38.50 | [12] | $ 32.66 | [12]
Forfeited, weighted average grant date fair value | $ 13.79 |  | $ 22.99 |  | $ 34.14 |
Restricted stock outstanding, weighted average grant date fair value | $ 34.86 |  | $ 21.03 |  | $ 22.05 |
Fair value at grant date of restricted stock issued | 2,400,000 |  | 2,300,000 |  | 1,900,000 |
Vesting date fair value of restricted stock | $ 2,000,000 |  | $ 1,600,000 |  | $ 2,600,000 |
Weighted average grant date fair value of restricted stock | $ 41.02 | [11] | $ 29.05 | [11] | $ 15.01 | [11]
[1] | We have 646,029 options exercisable at December 31, 2011 with weighted average exercise price of $31.01, weighted average remaining life of 2.4 years and intrinsic value of $1.1 million. Of these exercisable options, 252,277 had exercise prices higher than the market price of our Common Stock at December 31, 2011.
[2] | The outstanding options at December 31, 2011 had a weighted average remaining life of 3.5 years.
[3] | Represents the interest rate as of the grant date on US treasury bonds having the same life as the estimated life of the option grants.
[4] | The dividend yield is calculated utilizing the dividends paid for the previous one-year period and the per share price of Common Stock on the date of grant.
[5] | Based on the historical volatility of Common Stock over a period relevant to the related stock option grant.
[6] | The average expected option life is based on an analysis of our historical data.
[7] | The fair value at grant date of time-based restricted stock issued during the years ended December 31, 2011, 2010 and 2009 was $2.6 million, $2.6 million and $2.5 million, respectively.
[8] | The vesting date fair value of time-based restricted stock that vested during the years ended December 31, 2011, 2010 and 2009 was $3.9 million, $4.3 million and $2.9 million, respectively.
[9] | Represents the interest rate as of the grant date on US treasury bonds having the same life as the estimated life of the total return-based restricted stock grants.
[10] | Based on the historical volatility of Common Stock over a period relevant to the related total return-based restricted stock grant.
[11] | The fair value at grant date of total return-based restricted stock issued during the years ended December 31, 2011, 2010 and 2009 was $2.4 million, $2.3 million and $1.9 million, respectively. There were no performance-based restricted stock issued subsequent to 2008.
[12] | The vesting date fair value of total return-based and other types performance-based restricted stock that vested during the years ended December 31, 2011, 2010 and 2009 was $2.0 million, $1.6 million and $2.6 million, respectively.

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- Definition The amount of payment into the fund established for purposes of making future disbursements to the individual in accordance with the terms and understanding of the deferred compensation arrangement. + References No definition available. + Details
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- Definition Aggregate proceeds received by the entity during the annual period from exercises of stock or unit options and conversion of similar instruments granted under equity-based payment arrangements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph i -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (j) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition As of the balance sheet date, the aggregate unrecognized cost of equity-based awards made to employees under equity-based compensation awards that have yet to vest. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph h -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: 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 + 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 Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: 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=6943989&loc=d3e3602-108585 + Details
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- Definition Description of the period of time over 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, which may be expressed in a variety of ways (for example, in years, month and year). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph a -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: 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 + Details
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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(2)(e) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. 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)(iv)(3) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect during the reporting period as a result of the occurrence of a terminating event specified in the contractual agreement of the plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(2)(e) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. 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)(2)(iii)(3) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(2)(c) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. 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)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(2)(c) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph c(1) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(2)(a) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(2)(b) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(2)(a) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(2)(b) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(2)(d) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. 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)(2)(iii)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The total fair value of equity-based awards for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph c(2) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: 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 + Details
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- Definition The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(2)(d) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. 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)(2)(iii)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph e(2)(c) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The period of time an equity-based award is expected to be outstanding. An equity-based award's expected term is generally determined based on, among other factors, the instrument's contractual term and the effects of employees' expected exercise and post-vesting employment termination behavior. + References Reference 1: 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.D.2) -URI http://asc.fasb.org/extlink&oid=6793087&loc=d3e301413-122809 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph e(2)(a) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 -Section D -Subsection 2 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph e(2)(b) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The risk-free interest rate assumption that is used in valuing an option on its own shares. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph e(2)(d) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(iv) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The total dollar difference between fair values of the underlying shares reserved for issuance and exercise prices of vested portions of options outstanding and currently exercisable under the option plan as of the balance sheet date. + 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 + Details
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- 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 Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(1)(c), d(2) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. 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)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(1)(c) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. 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)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The total accumulated difference between fair values of underlying shares on dates of exercise and exercise price on options which were exercised (or share units converted) into shares during the reporting period under the plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph c(2) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: 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 + Details
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- Definition The weighted average price at which option holders acquired shares when converting their stock options into shares under the plan during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(1)(e) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. 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)(iv)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The combined weighted average exercise price associated with stock options during the period that have either lapsed or been forfeited. + 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)(iv)(3)-(4) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The weighted average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on stock options awarded under the plan during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(1)(d) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. 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)(iv)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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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 Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph c(1) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: 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 + Details
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- Definition The total dollar difference between fair values of the underlying shares reserved for issuance and exercise prices pertaining to options outstanding under the plan as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph d(1) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 2: 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 + Details
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- Definition The number of shares reserved for issuance under stock option agreements awarded under the plan that validly exist and are outstanding as of the balance sheet date, including vested options. + 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)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(1)(a) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(1)(b) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 4: 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 + Details
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- Definition The weighted average price as of the beginning of the year at which grantees can acquire the shares reserved for issuance under the stock option plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 123R -Paragraph A240 -Subparagraph b(1)(a) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. 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)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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