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CASH AND EQUIVALENTS AND MARKETABLE SECURITIES (Tables)
 9 Months Ended
Sep. 26, 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 September 26, 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
$
53,416,049


$
57,897,914


$
90,991


$
—


$
—


$
(200,772
)

$
53,507,040


$
57,697,142

Corporate debt and certificates of deposit
18,902,440


18,564,823


—


—


(47,506
)

(38,830
)

18,854,934


18,525,993

Total
$
72,318,489

 
$
76,462,737

 
$
90,991

 
$
—

 
$
(47,506
)
 
$
(239,602
)
 
$
72,361,974

 
$
76,223,135
Marketable Debt Securities
The contractual maturity of the Company’s marketable debt securities is as follows at September 26, 2015:
 
Less than
One year
 
One to
Five years
 
Greater than
Five years
 
Total
U.S. government and agency backed securities
$
25,108,141

 
$
20,717,860

 
$
7,681,038

 
$
53,507,039

Corporate debt and certificates of deposit
16,451,556

 
2,403,379

 
—

 
18,854,935

Total
$
41,559,697

 
$
23,121,239

 
$
7,681,038

 
$
72,361,974