Loans Receivable, Net (Details - TDRs Specific Valuation Allowance) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Impaired Financing Receivable With And With No Related Allowance [Line Items]
Impaired Financing Receivable, Recorded Investment	$ 1,491,529	$ 1,506,148
One- To Four-Family [Member]
Impaired Financing Receivable With And With No Related Allowance [Line Items]
Impaired Financing Receivable, With Related Allowance, Recorded Investment	480,141	503,557
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	736,426	725,568
Impaired Financing Receivable, Recorded Investment	1,216,567	1,229,125
Impaired Financing Receivable, Related Allowance	81,685	89,684
Impaired Financing Receivable, with Related Allowance, Net Investment	398,456	413,873
Impaired Financing Receivable, with No Related Allowance, Net Impaired	736,426	725,568
Impaired Financing Receivables, Net Investment, Total	1,134,882	1,139,441
Home Equity [Member]
Impaired Financing Receivable With And With No Related Allowance [Line Items]
Impaired Financing Receivable, With Related Allowance, Recorded Investment	165,524	185,133
Impaired Financing Receivable, with No Related Allowance, Recorded Investment	109,438	91,890
Impaired Financing Receivable, Recorded Investment	274,962	277,023
Impaired Financing Receivable, Related Allowance	66,421	81,690
Impaired Financing Receivable, with Related Allowance, Net Investment	99,103	103,443
Impaired Financing Receivable, with No Related Allowance, Net Impaired	109,438	91,890
Impaired Financing Receivables, Net Investment, Total	$ 208,541	$ 195,333