|
Investments (Detail) (USD $)
In Thousands, unless otherwise specified
|
Apr. 28, 2012
|
Jan. 28, 2012
|
| Investment Holdings [Line Items] |
|
|
| Held-to-Maturity Securities, Amortized Cost or Par Value |
$ 49,235 |
$ 47,236 |
| Held-to-Maturity Securities, Gross Unrealized Gains |
253 |
359 |
| Held-to-Maturity Securities, Gross Unrealized Losses |
(3) |
|
| Held-to-Maturity Securities, Estimated Fair Value |
49,485 |
47,595 |
| Available-for-Sale Securities, Amortized Cost or Par Value |
17,950 |
17,975 |
| Available-for-Sale Securities, Gross Unrealized Losses |
(1,113) |
(1,110) |
| Available-for-Sale Securities, Other-than-Temporary Impairment |
(2,699) |
(2,699) |
| Available-for-Sale Securities, Estimated Fair Value |
14,138 |
14,166 |
|
Mutual funds [Member]
|
|
|
| Investment Holdings [Line Items] |
|
|
| Trading Securities, at Amortized Cost or Par Value |
9,957 |
8,946 |
| Trading Securities, Gross Unrealized Losses |
(99) |
(365) |
| Trading Securities, Estimated Fair Value |
9,858 |
8,581 |
|
State and municipal bonds [Member]
|
|
|
| Investment Holdings [Line Items] |
|
|
| Held-to-Maturity Securities, Amortized Cost or Par Value |
45,481 |
43,474 |
| Held-to-Maturity Securities, Gross Unrealized Gains |
233 |
323 |
| Held-to-Maturity Securities, Gross Unrealized Losses |
(3) |
|
| Held-to-Maturity Securities, Estimated Fair Value |
45,711 |
43,797 |
|
Fixed maturities [Member]
|
|
|
| Investment Holdings [Line Items] |
|
|
| Held-to-Maturity Securities, Amortized Cost or Par Value |
3,254 |
3,262 |
| Held-to-Maturity Securities, Gross Unrealized Gains |
6 |
20 |
| Held-to-Maturity Securities, Estimated Fair Value |
3,260 |
3,282 |
|
Certificates of deposit [Member]
|
|
|
| Investment Holdings [Line Items] |
|
|
| Held-to-Maturity Securities, Amortized Cost or Par Value |
500 |
500 |
| Held-to-Maturity Securities, Gross Unrealized Gains |
14 |
16 |
| Held-to-Maturity Securities, Estimated Fair Value |
514 |
516 |
|
Auction-rate securities [Member]
|
|
|
| Investment Holdings [Line Items] |
|
|
| Available-for-Sale Securities, Amortized Cost or Par Value |
15,950 |
15,975 |
| Available-for-Sale Securities, Gross Unrealized Losses |
(1,113) |
(1,110) |
| Available-for-Sale Securities, Other-than-Temporary Impairment |
(725) |
(725) |
| Available-for-Sale Securities, Estimated Fair Value |
14,112 |
14,140 |
|
Preferred stock [Member]
|
|
|
| Investment Holdings [Line Items] |
|
|
| Available-for-Sale Securities, Amortized Cost or Par Value |
2,000 |
2,000 |
| Available-for-Sale Securities, Other-than-Temporary Impairment |
(1,974) |
(1,974) |
| Available-for-Sale Securities, Estimated Fair Value |
$ 26 |
$ 26 |