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Stock Award Plans (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Stock Award Plans [Abstract] |  |  |
Compensation cost | $ 11,104,000 | $ 11,591,000 | $ 11,621,000
Income tax benefit | $ 4,120,000 | 4,358,000 | 4,370,000
Stock Award Plan Information [Abstract] |  |  |
Term of grant | 7 years |  |
Vesting period | 3 years |  |
Share-based Compensation Plans Combined Disclosure [Abstract] |  |  |
Intrinsic value of stock options exercised | $ 2,555,000 | 11,671,000 | 6,703,000
Tax benefit from stock options exercised | 948,000 | 4,388,000 | 2,520,000
Intrinsic value of restricted stock vestings | 10,270,000 | 14,847,000 | 10,993,000
Tax benefit from restricted stock vesting | 3,810,000 | 5,583,000 | 4,133,000
Fair value of options vested | 2,180,000 | 3,759,000 | 3,341,000
Fair value of restricted stock vested | $ 10,270,000 | $ 14,847,000 | $ 10,993,000
Fair value of stock options granted (in dollars per share) | $ 25.18 | $ 36.05 | $ 25.14
Fair value of stock options granted | $ 2,893,000 | $ 4,226,000 | $ 4,184,000
Employee Stock Award Plan [Member] |  |  |
Stock Award Plan Information [Abstract] |  |  |
Shares available for future grants (in shares) | 2,329,238 |  |
Options Exercisable [Abstract] |  |  |
Stock options exercisable (in shares) | 239,518 | 157,140 | 175,170
Unvested Restricted Stock Award Shares [Roll Forward] |  |  |
Nonvested balance beginning of period, Unvested Restricted Stock Award Shares (in shares) | 321,453 | 399,278 | 418,128
Granted, Unvested Restricted Stock Award Shares (in shares) | 122,740 | 97,706 | 139,971
Vested, Unvested Restricted Stock Award Shares (in shares) | (113,958) | (141,870) | (149,162)
Forfeited, Unvested Restricted Stock Award Shares (in shares) | (18,508) | (33,661) | (9,659)
Nonvested balance end of period, Unvested Restricted Stock Award Shares (in shares) | 311,727 | 321,453 | 399,278
Weighted Average Grant Date Fair Value Per Share [Abstract] |  |  |
Nonvested balance end of period, Weighted Average Grant Date Fair Value Per Share (in dollars per share) | $ 71.04 | $ 54.92 | $ 45.39
Granted, Weighted Average Grant Date Fair Value Per Share (in dollars per share) | 75.04 | 97.46 | 69.85
Vested, Weighted Average Grant Date Fair Value Per Share (in dollars per share) | 60.73 | 45.64 | 44.30
Forfeited, Weighted Average Grant Date Fair Value Per Share (in dollars per share) | 82.00 | 63.56 | 61.20
Nonvested balance end of period, Weighted Average Grant Date Fair Value Per Share (in dollars per share) | 75.73 | $ 71.04 | $ 54.92
Employee Stock Award Plan [Member] | First Price Range [Member] |  |  |
Outstanding and Exercisable Stock options [Abstract] |  |  |
Range of Exercise Prices, upper limit (in dollars per share) | 36.35 |  |
Range of Exercise Prices, lower limit (in dollars per share) | $ 31.35 |  |
Options Outstanding [Abstract] |  |  |
Number Outstanding (in shares) | 16,910 |  |
Weighted Average Remaining Contractual Life | 1 year 1 month 6 days |  |
Weighted Average Exercise Price, Options Outstanding (in dollars per share) | $ 32.82 |  |
Options Exercisable [Abstract] |  |  |
Number Exercisable (in shares) | 16,910 |  |
Weighted Average Exercise Price, Options Exercisable (in dollars per share) | $ 32.82 |  |
Employee Stock Award Plan [Member] | Second Price Range [Member] |  |  |
Outstanding and Exercisable Stock options [Abstract] |  |  |
Range of Exercise Prices, upper limit (in dollars per share) | $ 46.74 |  |
Options Outstanding [Abstract] |  |  |
Number Outstanding (in shares) | 56,629 |  |
Weighted Average Remaining Contractual Life | 2 years 1 month 6 days |  |
Weighted Average Exercise Price, Options Outstanding (in dollars per share) | $ 46.74 |  |
Options Exercisable [Abstract] |  |  |
Number Exercisable (in shares) | 56,629 |  |
Weighted Average Exercise Price, Options Exercisable (in dollars per share) | $ 46.74 |  |
Employee Stock Award Plan [Member] | Third Price Range [Member] |  |  |
Outstanding and Exercisable Stock options [Abstract] |  |  |
Range of Exercise Prices, upper limit (in dollars per share) | 74.99 |  |
Range of Exercise Prices, lower limit (in dollars per share) | $ 65.28 |  |
Options Outstanding [Abstract] |  |  |
Number Outstanding (in shares) | 283,963 |  |
Weighted Average Remaining Contractual Life | 4 years 7 months 6 days |  |
Weighted Average Exercise Price, Options Outstanding (in dollars per share) | $ 70.98 |  |
Options Exercisable [Abstract] |  |  |
Number Exercisable (in shares) | 141,669 |  |
Weighted Average Exercise Price, Options Exercisable (in dollars per share) | $ 67.90 |  |
Employee Stock Award Plan [Member] | Fourth Price Range [Member] |  |  |
Outstanding and Exercisable Stock options [Abstract] |  |  |
Range of Exercise Prices, upper limit (in dollars per share) | 96.85 |  |
Range of Exercise Prices, lower limit (in dollars per share) | $ 93.64 |  |
Options Outstanding [Abstract] |  |  |
Number Outstanding (in shares) | 35,763 |  |
Weighted Average Remaining Contractual Life | 5 years 1 month 6 days |  |
Weighted Average Exercise Price, Options Outstanding (in dollars per share) | $ 94.27 |  |
Options Exercisable [Abstract] |  |  |
Number Exercisable (in shares) | 11,921 |  |
Weighted Average Exercise Price, Options Exercisable (in dollars per share) | $ 94.27 |  |
Employee Stock Award Plan [Member] | Fifth Price Range [Member] |  |  |
Outstanding and Exercisable Stock options [Abstract] |  |  |
Range of Exercise Prices, upper limit (in dollars per share) | 114.11 |  |
Range of Exercise Prices, lower limit (in dollars per share) | $ 101.46 |  |
Options Outstanding [Abstract] |  |  |
Number Outstanding (in shares) | 37,167 |  |
Weighted Average Remaining Contractual Life | 5 years 2 months 12 days |  |
Weighted Average Exercise Price, Options Outstanding (in dollars per share) | $ 103.22 |  |
Options Exercisable [Abstract] |  |  |
Number Exercisable (in shares) | 12,389 |  |
Weighted Average Exercise Price, Options Exercisable (in dollars per share) | $ 103.22 |  |
Employee Stock Award Plan [Member] | Full Exercise Price Range [Member] |  |  |
Outstanding and Exercisable Stock options [Abstract] |  |  |
Range of Exercise Prices, upper limit (in dollars per share) | 114.11 |  |
Range of Exercise Prices, lower limit (in dollars per share) | $ 31.35 |  |
Options Outstanding [Abstract] |  |  |
Number Outstanding (in shares) | 430,432 |  |
Weighted Average Remaining Contractual Life | 4 years 2 months 12 days |  |
Weighted Average Exercise Price, Options Outstanding (in dollars per share) | $ 71.01 |  |
Aggregate Intrinsic Value, Options Outstanding | $ 668,000 |  |
Options Exercisable [Abstract] |  |  |
Number Exercisable (in shares) | 239,518 |  |
Weighted Average Exercise Price, Options Exercisable (in dollars per share) | $ 63.56 |  |
Aggregate Intrinsic Value, Options Exercisable | $ 668,000 |  |
2000 Director Plan [Member] |  |  |
Stock Award Plan Information [Abstract] |  |  |
Term of grant | 10 years |  |
Vesting period | 6 months |  |
Shares available for future grants (in shares) | 539,531 |  |
Options Exercisable [Abstract] |  |  |
Stock options exercisable (in shares) | 220,429 | 298,334 | 320,082
Unvested Restricted Stock Award Shares [Roll Forward] |  |  |
Nonvested balance beginning of period, Unvested Restricted Stock Award Shares (in shares) | 292 | 384 | 348
Granted, Unvested Restricted Stock Award Shares (in shares) | 20,350 | 8,160 | 10,536
Vested, Unvested Restricted Stock Award Shares (in shares) | (18,851) | (8,252) | (10,500)
Nonvested balance end of period, Unvested Restricted Stock Award Shares (in shares) | 1,791 | 292 | 384
Weighted Average Grant Date Fair Value Per Share [Abstract] |  |  |
Nonvested balance end of period, Weighted Average Grant Date Fair Value Per Share (in dollars per share) | $ 99.52 | $ 75.65 | $ 62.99
Granted, Weighted Average Grant Date Fair Value Per Share (in dollars per share) | 78.52 | 99.52 | 75.65
Vested, Weighted Average Grant Date Fair Value Per Share (in dollars per share) | 79.77 | 98.41 | 75.23
Nonvested balance end of period, Weighted Average Grant Date Fair Value Per Share (in dollars per share) | 68.73 | $ 99.52 | $ 75.65
2000 Director Plan [Member] | First Price Range [Member] |  |  |
Outstanding and Exercisable Stock options [Abstract] |  |  |
Range of Exercise Prices, upper limit (in dollars per share) | 36.82 |  |
Range of Exercise Prices, lower limit (in dollars per share) | $ 29.60 |  |
Options Outstanding [Abstract] |  |  |
Number Outstanding (in shares) | 30,000 |  |
Weighted Average Remaining Contractual Life | 1 year 10 months 24 days |  |
Weighted Average Exercise Price, Options Outstanding (in dollars per share) | $ 33.60 |  |
Options Exercisable [Abstract] |  |  |
Number Exercisable (in shares) | 30,000 |  |
Weighted Average Exercise Price, Options Exercisable (in dollars per share) | $ 33.60 |  |
2000 Director Plan [Member] | Second Price Range [Member] |  |  |
Outstanding and Exercisable Stock options [Abstract] |  |  |
Range of Exercise Prices, upper limit (in dollars per share) | 56.45 |  |
Range of Exercise Prices, lower limit (in dollars per share) | $ 41.24 |  |
Options Outstanding [Abstract] |  |  |
Number Outstanding (in shares) | 71,276 |  |
Weighted Average Remaining Contractual Life | 4 years 3 months 18 days |  |
Weighted Average Exercise Price, Options Outstanding (in dollars per share) | $ 52.34 |  |
Options Exercisable [Abstract] |  |  |
Number Exercisable (in shares) | 71,276 |  |
Weighted Average Exercise Price, Options Exercisable (in dollars per share) | $ 52.34 |  |
2000 Director Plan [Member] | Third Price Range [Member] |  |  |
Outstanding and Exercisable Stock options [Abstract] |  |  |
Range of Exercise Prices, upper limit (in dollars per share) | 62.48 |  |
Range of Exercise Prices, lower limit (in dollars per share) | $ 61.89 |  |
Options Outstanding [Abstract] |  |  |
Number Outstanding (in shares) | 41,153 |  |
Weighted Average Remaining Contractual Life | 6 years 6 months |  |
Weighted Average Exercise Price, Options Outstanding (in dollars per share) | $ 62.34 |  |
Options Exercisable [Abstract] |  |  |
Number Exercisable (in shares) | 41,153 |  |
Weighted Average Exercise Price, Options Exercisable (in dollars per share) | $ 62.34 |  |
2000 Director Plan [Member] | Fourth Price Range [Member] |  |  |
Outstanding and Exercisable Stock options [Abstract] |  |  |
Range of Exercise Prices, upper limit (in dollars per share) | 99.52 |  |
Range of Exercise Prices, lower limit (in dollars per share) | $ 75.17 |  |
Options Outstanding [Abstract] |  |  |
Number Outstanding (in shares) | 78,000 |  |
Weighted Average Remaining Contractual Life | 7 years 3 months 18 days |  |
Weighted Average Exercise Price, Options Outstanding (in dollars per share) | $ 88.28 |  |
Options Exercisable [Abstract] |  |  |
Number Exercisable (in shares) | 78,000 |  |
Weighted Average Exercise Price, Options Exercisable (in dollars per share) | $ 88.28 |  |
2000 Director Plan [Member] | Sixth Price Range [Member] |  |  |
Outstanding and Exercisable Stock options [Abstract] |  |  |
Range of Exercise Prices, upper limit (in dollars per share) | 99.52 |  |
Range of Exercise Prices, lower limit (in dollars per share) | $ 29.60 |  |
2000 Director Plan [Member] | Full Exercise Price Range [Member] |  |  |
Options Outstanding [Abstract] |  |  |
Number Outstanding (in shares) | 220,429 |  |
Weighted Average Remaining Contractual Life | 5 years 4 months 24 days |  |
Weighted Average Exercise Price, Options Outstanding (in dollars per share) | $ 64.37 |  |
Aggregate Intrinsic Value, Options Outstanding | $ 775,000 |  |
Options Exercisable [Abstract] |  |  |
Number Exercisable (in shares) | 220,429 |  |
Weighted Average Exercise Price, Options Exercisable (in dollars per share) | $ 64.37 |  |
Aggregate Intrinsic Value, Options Exercisable | $ 775,000 |  |
Stock Options [Member] |  |  |
Share-based Compensation Plans Combined Disclosure [Abstract] |  |  |
Unrecognized compensation cost related to unvested awards | $ 2,956,000 |  |
Weighted average period of recognition in years | 1 year 2 months 12 days |  |
Fair Value Assumptions [Abstract] |  |  |
Dividend yield | 0.00% | 0.00% | 0.00%
Average risk-free interest rate | 1.30% | 2.00% | 1.10%
Stock price volatility | 33.00% | 33.00% | 34.00%
Estimated option term | 6 years |  |
Stock Options [Member] | Minimum [Member] |  |  |
Fair Value Assumptions [Abstract] |  |  |
Estimated option term |  | 6 years | 6 years
Stock Options [Member] | Maximum [Member] |  |  |
Fair Value Assumptions [Abstract] |  |  |
Estimated option term |  | 7 years | 7 years
Stock Options [Member] | Employee Stock Award Plan [Member] |  |  |
Outstanding Non-Qualified or Nonincentive Stock Awards [Roll Forward] |  |  |
Outstanding at Period Start, Outstanding Non-Qualified or Nonincentive Stock Awards (in shares) | 322,956 | 379,604 | 351,173
Granted, Outstanding Non-Qualified or Nonincentive Stock Awards (in shares) | 114,894 | 75,204 | 111,527
Exercised, Outstanding Non-Qualified or Nonincentive Stock Awards (in shares) | 0 | (119,276) | (83,096)
Canceled or expired, Outstanding Non-Qualified or Nonincentive Stock Awards (in shares) | (7,418) | (12,576) | 0
Outstanding at Period End, Outstanding Non-Qualified or Nonincentive Stock Awards (in shares) | 430,432 | 322,956 | 379,604
Weighted Average Exercise Price [Abstract] |  |  |
Outstanding at Period Start, Weighted Average Exercise Price (in dollars per share) | $ 69.95 | $ 55.42 | $ 45.54
Granted, Weighted Average Exercise Price (in dollars per share) | 74.99 | 98.91 | 70.94
Exercised, Weighted Average Exercise Price (in dollars per share) | 0 | 42.07 | 34.51
Canceled or expired, Weighted Average Exercise Price (in dollars per share) | 86.28 | 68.89 | 0
Outstanding at Period End, Weighted Average Exercise Price (in dollars per share) | $ 71.01 | $ 69.95 | $ 55.42
Stock Options [Member] | 2000 Director Plan [Member] |  |  |
Outstanding Non-Qualified or Nonincentive Stock Awards [Roll Forward] |  |  |
Outstanding at Period Start, Outstanding Non-Qualified or Nonincentive Stock Awards (in shares) | 298,334 | 320,322 | 345,938
Granted, Outstanding Non-Qualified or Nonincentive Stock Awards (in shares) | 0 | 42,000 | 54,958
Exercised, Outstanding Non-Qualified or Nonincentive Stock Awards (in shares) | (77,905) | (63,988) | (80,574)
Outstanding at Period End, Outstanding Non-Qualified or Nonincentive Stock Awards (in shares) | 220,429 | 298,334 | 320,322
Weighted Average Exercise Price [Abstract] |  |  |
Outstanding at Period Start, Weighted Average Exercise Price (in dollars per share) | $ 60.01 | $ 50.64 | $ 45.84
Granted, Weighted Average Exercise Price (in dollars per share) | 0 | 99.52 | 75.17
Exercised, Weighted Average Exercise Price (in dollars per share) | 47.65 | 39.08 | 46.75
Outstanding at Period End, Weighted Average Exercise Price (in dollars per share) | $ 64.37 | $ 60.01 | $ 50.64
Restricted Stock [Member] |  |  |
Share-based Compensation Plans Combined Disclosure [Abstract] |  |  |
Unrecognized compensation cost related to unvested awards | $ 16,920,000 |  |
Weighted average period of recognition in years | 2 years 9 months 18 days |  |

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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 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 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 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 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 + 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 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 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 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 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 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 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 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 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 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 + Details
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- Definition The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan. + 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) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Net number of share options (or share units) granted during the period. + 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)(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 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 Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding. + 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 Number of options outstanding, including both vested and non-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 -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)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Weighted average price 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 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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- Definition Expected term of share-based compensation awards, 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 S99 -Paragraph 1 -Subparagraph (SAB TOPIC 14.D.2) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 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)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 -Section D -Subsection 2 + Details
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- Definition Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable. + 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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