XML 137 R106.htm IDEA: XBRL DOCUMENT v2.4.1.9
Benefit Plans (Details 15) (Level 3, Pension benefits, Astoria Bank)
 12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Minimum    
Benefit Plans    
Gross guaranteed crediting rate 0.0250af_GrossGuaranteedCreditingRate
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= us-gaap_MinimumMember		 0.0210af_GrossGuaranteedCreditingRate
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= us-gaap_MinimumMember
Composite market value factor 1.018af_CompositeMarketValueFactor
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Maximum    
Benefit Plans    
Gross guaranteed crediting rate 0.0400af_GrossGuaranteedCreditingRate
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/ us-gaap_RangeAxis
= us-gaap_MaximumMember		 0.0435af_GrossGuaranteedCreditingRate
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= us-gaap_MaximumMember
Composite market value factor 1.081af_CompositeMarketValueFactor
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= us-gaap_MaximumMember		 1.073af_CompositeMarketValueFactor
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