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CASH AND EQUIVALENTS AND MARKETABLE SECURITIES (Tables)
 6 Months Ended
Jun. 27, 2015
Cash and Equivalents and Marketable Securities Disclosure [Abstract]  
Cash Cash Equivalents and Marketable Securities Table
Investments in available-for-sale marketable debt securities are as follows at June 27, 2015 and December 27, 2014:
 
Amortized Cost

Unrealized Gains

Unrealized Losses

Fair Value
 
2015

2014

2015

2014

2015

2014

2015

2014
U.S. government and agency backed securities
$
55,505,053


$
57,897,914


$
—


$
—


$
(39,473
)

$
(200,772
)

$
55,465,580


$
57,697,142

Corporate debt and certificates of deposit
16,413,099


18,564,823


—


—


(35,618
)

(38,830
)

16,377,481


18,525,993

Total
$
71,918,152

 
$
76,462,737

 
$
—

 
$
—

 
$
(75,091
)
 
$
(239,602
)
 
$
71,843,061

 
$
76,223,135
Marketable Debt Securities
The contractual maturity of the Company’s marketable debt securities is as follows at June 27, 2015:
 
Less than
One year
 
One to
Five years
 
Greater than
Five years
 
Total
U.S. government and agency backed securities
$
24,030,172

 
$
23,865,571

 
$
7,569,837

 
$
55,465,580

Corporate debt and certificates of deposit
14,413,761

 
1,963,720

 
—

 
16,377,481

Total
$
38,443,933

 
$
25,829,291

 
$
7,569,837

 
$
71,843,061