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Investments (Tables) | 9 Months Ended
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Dec. 29, 2012
Investments [Abstract] |
Available-for-Sale Securities by Investment Category | The following table summarizes the Company’s available-for-sale investment securities, gross unrealized gains and losses and fair value, aggregated by investment category (in thousands):
|  | December 29, 2012 |
|  |  |  |  | Gross |  |  | Gross |  |  |  |
|  | Amortized |  |  | Unrealized |  |  | Unrealized |  |  | Fair |
|  | Cost |  |  | Gains |  |  | Losses |  |  | Value |
U.S. Treasury and government agencies |  | $ | 2,751 |  |  | $ | 12 |  |  | $ | (4 | ) |  | $ | 2,759 |
Mortgage-backed securities |  |  | 5,050 |  |  |  | 25 |  |  |  | (107 | ) |  |  | 4,968 |
States and political subdivisions |  |  | 1,424 |  |  |  | 27 |  |  |  | (1 | ) |  |  | 1,450 |
Corporate debt securities |  |  | 3,179 |  |  |  | 56 |  |  |  | — |  |  |  | 3,235 |
Marketable equity securities |  |  | 3,945 |  |  |  | 245 |  |  |  | (96 | ) |  |  | 4,094 |
|  | $ | 16,349 |  |  | $ | 365 |  |  | $ | (208 | ) |  | $ | 16,506 |
|  | March 31, 2012 |
|  |  |  |  | Gross |  |  | Gross |  |  |  |
|  | Amortized |  |  | Unrealized |  |  | Unrealized |  |  | Fair |
|  | Cost |  |  | Gains |  |  | Losses |  |  | Value |
U.S. Treasury and government agencies |  | $ | 1,371 |  |  | $ | 11 |  |  | $ | (1 | ) |  | $ | 1,381 |
Mortgage-backed securities |  |  | 3,946 |  |  |  | 17 |  |  |  | (48 | ) |  |  | 3,915 |
States and political subdivisions |  |  | 1,186 |  |  |  | 26 |  |  |  | — |  |  |  | 1,212 |
Corporate debt securities |  |  | 3,640 |  |  |  | 37 |  |  |  | (1 | ) |  |  | 3,676 |
Marketable equity securities |  |  | 3,883 |  |  |  | 218 |  |  |  | (83 | ) |  |  | 4,018 |
|  | $ | 14,026 |  |  | $ | 309 |  |  | $ | (133 | ) |  | $ | 14,202 |
Investment Securities in a Continuous Unrealized Loss Position | The following tables show the gross unrealized losses and fair value, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position (in thousands):
|  | December 29, 2012 |
|  | Less than 12 Months |  |  | 12 Months or Longer |  |  | Total |
|  | Fair |  |  | Unrealized |  |  | Fair |  |  | Unrealized |  |  | Fair |  |  | Unrealized |
|  | Value |  |  | Losses |  |  | Value |  |  | Losses |  |  | Value |  |  | Losses |
U.S. Treasury and government agencies |  | $ | 796 |  |  | $ | (4 | ) |  | $ | — |  |  | $ | — |  |  | $ | 796 |  |  | $ | (4 | )
Mortgage-backed securities |  |  | 2,429 |  |  |  | (107 | ) |  |  | — |  |  |  | — |  |  |  | 2,429 |  |  |  | (107 | )
States and political subdivisions |  |  | 256 |  |  |  | (1 | ) |  |  | — |  |  |  | — |  |  |  | 256 |  |  |  | (1 | )
Marketable equity securities |  |  | 605 |  |  |  | (30 | ) |  |  | 424 |  |  |  | (66 | ) |  |  | 1,029 |  |  |  | (96 | )
|  | $ | 4,086 |  |  | $ | (142 | ) |  | $ | 424 |  |  | $ | (66 | ) |  | $ | 4,510 |  |  | $ | (208 | )
|  | March 31, 2012 |
|  | Less than 12 Months |  |  | 12 Months or Longer |  |  | Total |
|  | Fair |  |  | Unrealized |  |  | Fair |  |  | Unrealized |  |  | Fair |  |  | Unrealized |
|  | Value |  |  | Losses |  |  | Value |  |  | Losses |  |  | Value |  |  | Losses |
U.S. Treasury and government agencies |  | $ | 249 |  |  | $ | (1 | ) |  | $ | — |  |  | $ | — |  |  | $ | 249 |  |  | $ | (1 | )
Mortgage-backed securities |  |  | 2,509 |  |  |  | (48 | ) |  |  | — |  |  |  | — |  |  |  | 2,509 |  |  |  | (48 | )
Corporate debt securities |  |  | 384 |  |  |  | (1 | ) |  |  | — |  |  |  | — |  |  |  | 384 |  |  |  | (1 | )
Marketable equity securities |  |  | 1,194 |  |  |  | (83 | ) |  |  | — |  |  |  | — |  |  |  | 1,194 |  |  |  | (83 | )
|  | $ | 4,336 |  |  | $ | (133 | ) |  | $ | — |  |  | $ | — |  |  | $ | 4,336 |  |  | $ | (133 | )
Contractual Maturity of Investment Securities | The amortized cost and fair value of the Company’s investments in debt securities, by contractual maturity, are shown in the table below (in thousands). Expected maturities will differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties.
|  | December 29, 2012 |  |  | March 31, 2012 |
|  | Amortized |  |  | Fair |  |  | Amortized |  |  | Fair |
|  | Cost |  |  | Value |  |  | Cost |  |  | Value |
Due in less than one year |  | $ | 2,076 |  |  | $ | 2,088 |  |  | $ | 1,355 |  |  | $ | 1,359 |
Due after one year through five years |  |  | 4,807 |  |  |  | 4,907 |  |  |  | 5,498 |  |  |  | 5,573 |
Due after five years through ten years |  |  | 744 |  |  |  | 715 |  |  |  | 260 |  |  |  | 270 |
Due after ten years |  |  | 4,777 |  |  |  | 4,702 |  |  |  | 3,030 |  |  |  | 2,982 |
|  | $ | 12,404 |  |  | $ | 12,412 |  |  | $ | 10,143 |  |  | $ | 10,184 |

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