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CASH AND EQUIVALENTS AND MARKETABLE SECURITIES (Tables)
 3 Months Ended
Mar. 28, 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 March 28, 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
$
55,667,125


$
57,897,914


$
73,752


$
—


$
—


$
(200,772
)

$
55,740,877


$
57,697,142

Corporate debt and certificates of deposit
18,995,265


18,564,823


—


—


(50,882
)

(38,830
)

18,944,383


18,525,993

Total
$
74,662,390

 
$
76,462,737

 
$
73,752

 
$
—

 
$
(50,882
)
 
$
(239,602
)
 
$
74,685,260

 
$
76,223,135
Marketable Debt Securities
The contractual maturity of the Company’s marketable debt securities is as follows at March 28, 2015:
 
Less than
One year
 
One to
Five years
 
Greater than
Five years
 
Total
U.S. government and agency backed securities
$
11,150,469

 
$
36,937,584

 
$
7,652,824

 
$
55,740,877

Corporate debt and certificates of deposit
15,740,959

 
2,255,924

 
947,500

 
18,944,383

Total
$
26,891,428

 
$
39,193,508

 
$
8,600,324

 
$
74,685,260