XML 59 R27.htm IDEA: XBRL DOCUMENT v2.4.1.9
Earnings Per Share - Additional Information (Detail) (Antidilutive Options [Member], USD $)
 3 Months Ended
Mar. 31, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Options to purchase shares of common stock, excluded from computation of diluted earnings per share 91,732us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount
Minimum [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Exercise prices per share 14.80asbi_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableExercisePrice
/ us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis
= asbi_AntidilutiveOptionsMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
Maximum [Member]  
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]  
Exercise prices per share 15.56asbi_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsExercisableExercisePrice
/ us-gaap_AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareByAntidilutiveSecuritiesAxis
= asbi_AntidilutiveOptionsMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember