Loans Receivable (excluding Covered Loans) (Loans on Non-accrual Status) (Details) (USD $)	Jun. 30, 2014	Sep. 30, 2013	Jun. 30, 2013
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans by portfolio segment	$ 94,226,000	$ 131,299,000	$ 131,299,000
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status	100.00%	100.00%
Single-Family Residential [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans by portfolio segment	78,317,000	100,460,000
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status	83.20%	76.50%
Construction - Speculative [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans by portfolio segment	1,966,000	4,560,000
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status	2.10%	3.50%
Construction - Custom [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans by portfolio segment	143,000	0
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status	0.20%	0.00%
Land - Acquisition & Development [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans by portfolio segment	2,295,000	2,903,000
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status	2.40%	2.20%
Land - Consumer Lot Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans by portfolio segment	1,879,000	3,337,000
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status	2.00%	2.50%
Multi-Family [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans by portfolio segment	2,103,000	6,573,000
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status	2.20%	5.00%
Commercial Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans by portfolio segment	5,442,000	11,736,000
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status	5.80%	8.90%
Commercial & Industrial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans by portfolio segment	516,000	477,000
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status	0.50%	0.40%
HELOC [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans by portfolio segment	970,000	263,000
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status	1.00%	0.20%
Consumer [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Nonaccrual loans by portfolio segment	$ 595,000	$ 990,000
Ratio of nonaccrual loan by portfolio segment to total loans on nonaccrual status	0.60%	0.80%