Consolidated Statements of Comprehensive Income (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Comprehensive Income
Net income	$ 44,239us-gaap_NetIncomeLoss	$ 37,752us-gaap_NetIncomeLoss	$ 34,331us-gaap_NetIncomeLoss
Unrecognized actuarial (losses) gains	(3,790)	3,261	(479)
Amortization of actuarial losses	370	696	587
Amortization of prior service credit	(26)	(26)	(26)
OTTI charges included in income		798ffic_OTTIReclassification	437ffic_OTTIReclassification
Reclassification adjustment for net gains included in income	(1,634)	(1,700)	(26)
Unrealized gains (losses) on securities	13,548	(26,541)	6,831
Comprehensive income	$ 52,707us-gaap_ComprehensiveIncomeNetOfTax	$ 14,240us-gaap_ComprehensiveIncomeNetOfTax	$ 41,655us-gaap_ComprehensiveIncomeNetOfTax

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OTTI charges that are included in income.

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Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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Amount after tax of (increase) decrease in the value of the projected benefit obligation related to a change in an actuarial assumption and increase (decrease) in the value of the plan assets resulting from experience different from that assumed, that has not been recognized in net periodic benefit (cost) credit.

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Amount before tax of reclassification adjustment from accumulated other comprehensive (income) loss for prior service cost (credit) related to pension and other postretirement benefit plans.

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Amount after tax of reclassification adjustment from accumulated other comprehensive income for unrealized gain (loss) realized upon the sale of available-for-sale securities.

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Amount after tax, before reclassification adjustments, of unrealized holding gain (loss) on available-for-sale securities.

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