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Mortgage-Backed Securities | 12 Months Ended
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Mar. 31, 2012
Mortgage-Backed Securities: |
Mortgage-Backed Securities |
4. | MORTGAGE-BACKED SECURITIES
Mortgage-backed securities held to maturity consisted of the following (in thousands):
March 31, 2012 | Amortized Cost |  | Gross Unrealized Gains |  | Gross Unrealized Losses |  | Estimated Fair Value |
FHLMC mortgage-backed securities | $ | 69 |  | $ | 4 |  | $ | - |  | $ | 73 |
FNMA mortgage-backed securities |  | 102 |  |  | 2 |  |  | - |  |  | 104 |
Total | $ | 171 |  | $ | 6 |  | $ | - |  | $ | 177 |
March 31, 2011 |  |  |  |  |  |  |  |  |  |  |  |
FHLMC mortgage-backed securities | $ | 78 |  | $ | 4 |  | $ | - |  | $ | 82 |
FNMA mortgage-backed securities |  | 112 |  |  | 5 |  |  | - |  |  | 117 |
Total | $ | 190 |  | $ | 9 |  | $ | - |  | $ | 199 |
Mortgage-backed securities held to maturity with an amortized cost of $69,000 and $76,000 and a fair value of $71,000 and $80,000 at March 31, 2012 and 2011, respectively, were pledged as collateral for governmental public funds. There were no mortgage-backed securities pledged as collateral for treasury tax and loan funds held by the Bank at March 31, 2012. Mortgage-backed securities held to maturity with an amortized cost of $98,000 and a fair value of $103,000 at March 31, 2011 were pledged as collateral for treasury tax and loan funds held by the Bank. The contractual maturities of mortgage-backed securities classified as held to maturity are as follows (in thousands):
March 31, 2012 | Amortized Cost |  | Estimated Fair Value
Due in one year or less | $ | - |  | $ | -
Due after one year through five years |  | 3 |  |  | 3
Due after five years through ten years |  | - |  |  | -
Due after ten years |  | 168 |  |  | 174
Total | $ | 171 |  | $ | 177
Mortgage-backed securities available for sale consisted of the following (in thousands):
March 31, 2012 |  | Amortized Cost |  |  | Gross Unrealized Gains |  |  | Gross Unrealized Losses |  |  | Estimated Fair Value |
Real estate mortgage investment conduits | $ | 319 |  | $ | 10 |  | $ | - |  | $ | 329 |
FHLMC mortgage-backed securities |  | 613 |  |  | 23 |  |  | - |  |  | 636 |
FNMA mortgage-backed securities |  | 8 |  |  | 1 |  |  | - |  |  | 9 |
Total | $ | 940 |  | $ | 34 |  | $ | - |  | $ | 974 |
March 31, 2011 |  |  |  |  |  |  |  |  |  |  |  |
Real estate mortgage investment conduits | $ | 421 |  | $ | 12 |  | $ | - |  | $ | 433 |
FHLMC mortgage-backed securities |  | 1,270 |  |  | 34 |  |  | - |  |  | 1,304 |
FNMA mortgage-backed securities |  | 38 |  |  | 2 |  |  | - |  |  | 40 |
Total | $ | 1,729 |  | $ | 48 |  | $ | - |  | $ | 1,777 |
The contractual maturities of mortgage-backed securities available for sale are as follows (in thousands):
March 31, 2012 |  | Amortized Cost |  |  | Estimated Fair Value
Due in one year or less | $ | - |  | $ | -
Due after one year through five years |  | 714 |  |  | 743
Due after five years through ten years |  | - |  |  | -
Due after ten years |  | 226 |  |  | 231
Total | $ | 940 |  | $ | 974
Expected maturities of mortgage-backed securities held to maturity and available for sale will differ from contractual maturities because borrowers may have the right to prepay obligations with or without prepayment penalties. Mortgage-backed securities available for sale with an amortized cost of $744,000 and $178,000 and a fair value of $776,000 and $187,000 at March 31, 2012 and 2011, respectively, were pledged as collateral for government public funds held by the Bank. The real estate mortgage investment conduits consist of FHLMC and Fannie Mae (“FNMA”) securities.

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