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Marketable Securities
 12 Months Ended
Apr. 28, 2012
Marketable Securities [Abstract]  
Marketable Securities
Marketable Securities

We have a cash management program which provides for the investment of cash balances not used in current operations.  We classify our investments in marketable securities as available-for-sale in accordance with the provisions of ASU 320, Investments – Debt and Equity Securities.  Marketable securities classified as available-for-sale are reported at fair value with unrealized gains or losses, net of tax, reported in other comprehensive income (loss).  Unrealized losses considered to be “other-than-temporary” are recognized currently in earnings.  For fiscal 2012 and 2011, no gains or losses on available-for-sale securities were recognized in earnings. The cost of securities sold is based on the specific identification method.  Where quoted market prices are not available, we use the market price of similar types of securities that are traded in the market to estimate fair value.  As of April 28, 2012 and April 30, 2011, our available-for-sale securities consisted of the following:
 
Amortized Cost
 
Unrealized Gain
 
Unrealized Loss
 
Fair Value
Balance as of April 28, 2012:
 
 
 
 
 
 
 
Certificates of deposit
$
7,657

 
$
—

 
$
—

 
$
7,657

U.S. Government securities
7,507

 
49

 
—

 
7,556

U.S. Government sponsored entities
4,503

 
2

 
—

 
4,505

Municipal bonds
5,517

 
23

 
—

 
5,540

 
$
25,184

 
$
74

 
$
—

 
$
25,258

Balance as of April 30, 2011:
 
 
 
 
 
 
 
Certificates of deposit
$
4,913

 
$
—

 
$
—

 
$
4,913

U.S. Government securities
1,998

 
1

 
—

 
1,999

U.S. Government sponsored entities
13,598

 
19

 
—

 
13,617

Municipal bonds
2,412

 
2

 
—

 
2,414

 
$
22,921

 
$
22

 
$
—

 
$
22,943


All available-for-sale securities are classified as current assets, as they are readily available to support our current operating needs. The contractual maturities of available-for-sale debt securities as of April 28, 2012 were as follows:
 
Less than 12 months
 
Greater than 12 months
 
Total
Certificates of deposit
$
5,927

 
$
1,730

 
$
7,657

U.S. Government securities
4,522

 
3,034

 
7,556

U.S. Government sponsored agencies
500

 
4,005

 
4,505

Municipal obligations
1,601

 
3,939

 
5,540

Total available for sale
$
12,550

 
$
12,708

 
$
25,258