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Stock Option and Purchase Plans - Compensation Expense Information Based on Fair Value of Stock Options (Detail) (USD $)
In Thousands, unless otherwise specified |
12 Months Ended | ||
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Dec. 31, 2014
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Dec. 31, 2013
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Dec. 31, 2012
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| Disclosure of Compensation Related Costs, Share-based Payments [Abstract] | |||
| Stock Compensation Expense | $ 1,730us-gaap_AllocatedShareBasedCompensationExpense | $ 1,384us-gaap_AllocatedShareBasedCompensationExpense | $ 1,351us-gaap_AllocatedShareBasedCompensationExpense |
| Tax Benefit | (122)us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense | (112)us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense | (136)us-gaap_EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense |
| Stock Compensation Expense, Net of Tax | $ 1,608us-gaap_AllocatedShareBasedCompensationExpenseNetOfTax | $ 1,272us-gaap_AllocatedShareBasedCompensationExpenseNetOfTax | $ 1,215us-gaap_AllocatedShareBasedCompensationExpenseNetOfTax |
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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. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition
The amount of expense, net of income tax, 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. No definition available.
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- Details
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- Definition
The total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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