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Bank subsidiary (Details 6) (USD $) In Thousands, unless otherwise specified | Sep. 30, 2013 | Dec. 31, 2012
--- | --- | ---
Amortized Cost |  |
Due in one year or less | $ 28,120 |
Due after one year through five years | 37,922 |
Due after five years through ten years | 85,760 |
Due after ten years | 25,191 |
Total amortized cost | 176,993 |
Mortgage-related securities-FNMA, FHLMC and GNMA - amortized cost | 359,437 |
Total available-for-sale securities, amortized cost | 536,430 | 653,492
Fair value |  |
Due in one year or less | 28,143 |
Due after one year through five years | 38,324 |
Due after five years through ten years | 87,192 |
Due after ten years | 23,628 |
Total fair value | 177,287 |
Mortgage-related securities-FNMA, FHLMC and GNMA - fair value | 357,977 |
Total available for sale securities | $ 535,264 | $ 671,358

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