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Income Taxes - Net Deferred Tax Asset (Liability) (Details) (USD $) In Thousands, unless otherwise specified | Sep. 30, 2014 | Sep. 30, 2013
--- | --- | ---
Deferred tax assets |  |
Loan loss reserves | $ 48,505 | $ 52,182
REO reserves | 13,680 | 18,018
Asset Purchase Tax Basis Difference (net) | 8,812 | 20,008
Delinquent accrued interest | 4,767 | 6,536
Other, net | 6,549 | 3,810
Total deferred tax assets | 82,313 | 100,554
Deferred tax liabilities |  |
FDIC indemnification asset | 0 | 8,033
Federal Home Loan Bank stock dividends | 32,810 | 34,367
Valuation adjustment on available-for-sale securities | 12,032 | 3,706
Loan origination costs | 13,002 | 11,980
Depreciation | 22,021 | 19,722
Core deposit intangible | 0 | 192
Total deferred tax liabilities | 79,865 | 78,000
Net deferred tax asset | 2,448 | 22,554
Current tax asset | 14,067 | 21,446
Net tax asset | $ 16,515 | $ 44,000

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