Stock-Based Compensation - Weighted-Average Assumptions Used in Option Pricing Model (Details) (Stock Option, USD $)
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12 Months Ended | |
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Dec. 31, 2013
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Dec. 31, 2012
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Stock Option
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Schedule of Share-Based Compensation Award, Options, Fair Value Assumption Inputs | ||
Weighted average grant date fair value of options granted (in dollars per share) | $ 3.54us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue / us-gaap_AwardTypeAxis = us-gaap_StockOptionMember |
$ 4.06us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsGrantsInPeriodWeightedAverageGrantDateFairValue / us-gaap_AwardTypeAxis = us-gaap_StockOptionMember |
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions and Methodology [Abstract] | ||
Expected volatility | 30.61%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate / us-gaap_AwardTypeAxis = us-gaap_StockOptionMember |
37.46%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate / us-gaap_AwardTypeAxis = us-gaap_StockOptionMember |
Expected dividend yield | 3.00%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate / us-gaap_AwardTypeAxis = us-gaap_StockOptionMember |
3.35%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate / us-gaap_AwardTypeAxis = us-gaap_StockOptionMember |
Risk-free interest rate | 0.88%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate / us-gaap_AwardTypeAxis = us-gaap_StockOptionMember |
1.99%us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate / us-gaap_AwardTypeAxis = us-gaap_StockOptionMember |
Expected life of options (in years) | 5 years 6 months 6 days | 7 years 10 months 6 days |
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No authoritative reference available. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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No authoritative reference available. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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No authoritative reference available. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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No authoritative reference available. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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