Loans Receivable And Allowance For Credit Losses (Troubled Debt Restructurings On Financing Receivables) (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011
Financing Receivable, Modifications [Line Items]
Number Of Contracts	71
Pre-Restructured Outstanding	$ 10,331
Post-Restructured Outstanding	10,380
One-To Four-Family Loans - Originated [Member]
Financing Receivable, Modifications [Line Items]
Number Of Contracts	70
Pre-Restructured Outstanding	10,331
Post-Restructured Outstanding	10,370
Multi-Family And Commercial Loans [Member]
Financing Receivable, Modifications [Line Items]
Number Of Contracts
Pre-Restructured Outstanding
Post-Restructured Outstanding
Consumer - Home Equity [Member]
Financing Receivable, Modifications [Line Items]
Number Of Contracts	1
Post-Restructured Outstanding	10
Consumer - Other [Member]
Financing Receivable, Modifications [Line Items]
Number Of Contracts
Pre-Restructured Outstanding
Post-Restructured Outstanding