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v2.4.1.9

Consolidated Statements of Income (USD $) In Thousands, except Share data, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Revenues |  |  |
Premiums earned | $ 375,747 us-gaap_PremiumsEarnedNet | $ 329,983 us-gaap_PremiumsEarnedNet | $ 290,689 us-gaap_PremiumsEarnedNet
Net investment income | 27,214 us-gaap_NetInvestmentIncome | 27,029 us-gaap_NetInvestmentIncome | 27,018 us-gaap_NetInvestmentIncome
Net realized gains (losses) on investments | 697 us-gaap_MarketableSecuritiesRealizedGainLoss | (1,211)us-gaap_MarketableSecuritiesRealizedGainLoss | 2,979 us-gaap_MarketableSecuritiesRealizedGainLoss
Fee and other income | 361 us-gaap_OtherIncome | 534 us-gaap_OtherIncome | 562 us-gaap_OtherIncome
Total revenues | 404,019 us-gaap_Revenues | 356,335 us-gaap_Revenues | 321,248 us-gaap_Revenues
Expenses |  |  |
Loss and loss adjustment expenses incurred | 244,916 us-gaap_PolicyholderBenefitsAndClaimsIncurredNet | 228,973 us-gaap_PolicyholderBenefitsAndClaimsIncurredNet | 219,903 us-gaap_PolicyholderBenefitsAndClaimsIncurredNet
Underwriting and certain other operating costs | 32,573 amsf_UnderwritingAndCertainOtherOperatingCosts | 18,951 amsf_UnderwritingAndCertainOtherOperatingCosts | 18,450 amsf_UnderwritingAndCertainOtherOperatingCosts
Commissions | 27,872 us-gaap_InsuranceCommissions | 25,303 us-gaap_InsuranceCommissions | 22,144 us-gaap_InsuranceCommissions
Salaries and benefits | 24,518 us-gaap_LaborAndRelatedExpense | 22,862 us-gaap_LaborAndRelatedExpense | 20,839 us-gaap_LaborAndRelatedExpense
Interest expense |  |  | 566 us-gaap_InterestExpense
Policyholder dividends | 391 us-gaap_PolicyholderDividends | 1,042 us-gaap_PolicyholderDividends | 2,203 us-gaap_PolicyholderDividends
Total expenses | 330,270 us-gaap_BenefitsLossesAndExpenses | 297,131 us-gaap_BenefitsLossesAndExpenses | 284,105 us-gaap_BenefitsLossesAndExpenses
Income before income taxes | 73,749 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest | 59,204 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest | 37,143 us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
Income tax expense | 20,083 us-gaap_IncomeTaxExpenseBenefit | 15,567 us-gaap_IncomeTaxExpenseBenefit | 7,790 us-gaap_IncomeTaxExpenseBenefit
Net income | 53,666 us-gaap_NetIncomeLoss | 43,637 us-gaap_NetIncomeLoss | 29,353 us-gaap_NetIncomeLoss
Net income available to common shareholders | $ 53,666 us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted | $ 43,495 us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted | $ 29,331 us-gaap_NetIncomeLossAvailableToCommonStockholdersDiluted
Earnings per share |  |  |
Basic | $ 2.88 us-gaap_EarningsPerShareBasic | $ 2.37 us-gaap_EarningsPerShareBasic | $ 1.62 us-gaap_EarningsPerShareBasic
Diluted | $ 2.84 us-gaap_EarningsPerShareDiluted | $ 2.32 us-gaap_EarningsPerShareDiluted | $ 1.58 us-gaap_EarningsPerShareDiluted
Shares used in computing earnings per share |  |  |
Basic | 18,646,128 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic | 18,373,033 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic | 18,166,261 us-gaap_WeightedAverageNumberOfSharesOutstandingBasic
Diluted | 18,928,504 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding | 18,748,809 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding | 18,575,191 us-gaap_WeightedAverageNumberOfDilutedSharesOutstanding
Extraordinary cash dividends declared per common share | $ 1.50 amsf_SpecialCashDividendDeclaredPerShare | $ 0.00 amsf_SpecialCashDividendDeclaredPerShare |
Cash dividends declared per common share | $ 0.48 us-gaap_CommonStockDividendsPerShareDeclared | $ 0.32 us-gaap_CommonStockDividendsPerShareDeclared |

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