Regulatory Matters (Tables)

3 Months Ended

Mar. 31, 2017

Regulatory Capital Requirements [Abstract]

Schedule of Regulatory Capital Requirements

The following table sets forth information regarding the regulatory capital requirements applicable to Astoria Financial Corporation and Astoria Bank.

	At March 31, 2017
	Actual				Minimum Capital Requirements					Minimum Capital Requirements with Conservation Buffer					To be Well Capitalized Under Prompt Corrective Action Provisions
(Dollars in Thousands)	Amount		Ratio			Amount		Ratio			Amount		Ratio			Amount		Ratio
Astoria Financial Corporation:
Tier 1 leverage	$	1,583,061	11.12	%		$	569,684	4.00	%		N/A		N/A			$	712,105	5.00	%
Common equity tier 1 risk-based	1,455,879		18.02			363,516		4.50			$	464,492	5.75	%		525,078		6.50
Tier 1 risk-based	1,583,061		19.60			484,688		6.00			585,664		7.25			646,250		8.00
Total risk-based	1,665,994		20.62			646,250		8.00			747,227		9.25			807,813		10.00
Astoria Bank:
Tier 1 leverage	$	1,762,569	12.44	%		$	566,931	4.00	%		N/A		N/A			$	708,664	5.00	%
Common equity tier 1 risk-based	1,762,569		21.86			362,844		4.50			$	463,634	5.75	%		524,108		6.50
Tier 1 risk-based	1,762,569		21.86			483,792		6.00			584,582		7.25			645,056		8.00
Total risk-based	1,845,502		22.89			645,056		8.00			745,846		9.25			806,320		10.00

	At December 31, 2016
	Actual				Minimum Capital Requirements					Minimum Capital Requirements with Conservation Buffer					To be Well Capitalized Under Prompt Corrective Action Provisions
(Dollars in Thousands)	Amount		Ratio			Amount		Ratio			Amount		Ratio			Amount		Ratio
Astoria Financial Corporation:
Tier 1 leverage	$	1,572,750	10.85	%		$	579,829	4.00	%		N/A		N/A			$	724,786	5.00	%
Common equity tier 1 risk-based	1,448,341		17.29			376,857		4.50			$	429,199	5.125	%		544,350		6.50
Tier 1 risk-based	1,572,750		18.78			502,477		6.00			554,818		6.625			669,969		8.00
Total risk-based	1,659,221		19.81			669,969		8.00			722,310		8.625			837,461		10.00
Astoria Bank:
Tier 1 leverage	$	1,742,580	12.09	%		$	576,660	4.00	%		N/A		N/A			$	720,825	5.00	%
Common equity tier 1 risk-based	1,742,580		20.85			376,129		4.50			$	428,369	5.125	%		543,297		6.50
Tier 1 risk-based	1,742,580		20.85			501,505		6.00			553,745		6.625			668,673		8.00
Total risk-based	1,829,051		21.88			668,673		8.00			720,913		8.625			835,841		10.00