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CASH AND EQUIVALENTS AND MARKETABLE SECURITIES (Tables)
 3 Months Ended
Apr. 01, 2017
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 April 1, 2017 and December 31, 2016:
 
Amortized Cost

Unrealized Gains

Unrealized Losses

Fair Value
 
2017

2016

2017

2016

2017

2016

2017

2016
U.S. government and agency backed securities
$
35,116,536


$
36,343,817


$
—


$
—


$
(201,268
)

$
(252,556
)

$
34,915,268


$
36,091,261

Corporate debt and certificates of deposit
14,475,561


25,323,428


—


—


(33,326
)

(39,288
)

14,442,235


25,284,140

Total
$
49,592,097

 
$
61,667,245

 
$
—

 
$
—

 
$
(234,594
)
 
$
(291,844
)
 
$
49,357,503

 
$
61,375,401
Marketable Debt Securities
The contractual maturity of the Company’s marketable debt securities is as follows at April 1, 2017:
 
Less than
One year
 
One to
Five years
 
Greater than
Five years
 
Total
U.S. government and agency backed securities
$
15,495,380

 
$
15,501,588

 
$
3,918,300

 
$
34,915,268

Corporate debt and certificates of deposit
13,484,735

 
957,500

 
—

 
14,442,235

Total
$
28,980,115

 
$
16,459,088

 
$
3,918,300

 
$
49,357,503