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CASH AND EQUIVALENTS AND MARKETABLE SECURITIES (Tables)
 9 Months Ended
Sep. 24, 2016
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 September 24, 2016 and December 26, 2015:
 
Amortized Cost

Unrealized Gains

Unrealized Losses

Fair Value
 
2016

2015

2016

2015

2016

2015

2016

2015
U.S. government and agency backed securities
$
42,366,974


$
46,586,224


$
71,208


$
—


$
—


$
(121,561
)

$
42,438,182


$
46,464,663

Corporate debt and certificates of deposit
20,654,599


14,534,247


—


—


(58,401
)

(56,019
)

20,596,198


14,478,228

Total
$
63,021,573

 
$
61,120,471

 
$
71,208

 
$
—

 
$
(58,401
)
 
$
(177,580
)
 
$
63,034,380

 
$
60,942,891
Marketable Debt Securities
The contractual maturity of the Company’s marketable debt securities is as follows at September 24, 2016:
 
Less than
One year
 
One to
Five years
 
Greater than
Five years
 
Total
U.S. government and agency backed securities
$
16,904,660

 
$
18,479,622

 
$
7,053,900

 
$
42,438,182

Corporate debt and certificates of deposit
16,491,826

 
4,104,372

 
—

 
20,596,198

Total
$
33,396,486

 
$
22,583,994

 
$
7,053,900

 
$
63,034,380