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Financial Instruments (Tables)
 12 Months Ended
Dec. 27, 2014
Financial Instruments [Abstract]  
Fair Value, by Balance Sheet Grouping
The following table details the fair value measurements within the fair value hierarchy of the Company’s financial assets:
 
 
 
 
Fair Value Measurement at December 27, 2014 Using:
 
Total
 
Level 1        
 
Level 2        
 
Level 3        
Money Markets and Cash Equivalents
$
14,635,802

 
$
14,635,802

 
$
—

 
$
—

U.S. Government Securities
57,697,142

 
21,218,340

 
36,478,802

 
—

Corporate Debt
5,970,983

 
—

 
5,970,983

 
—

Certificates of Deposit
12,555,010

 
—

 
12,555,010

 
—

Vuzix Corporation
1,500,777

 
1,500,777

 
—

 
—

GCS Holdings
180,347

 
180,347

 
—

 
—

 
$
92,540,061

 
$
37,535,266

 
$
55,004,795

 
$
—

 
 
 
 
Fair Value Measurement at December 28, 2013 Using:
 
Total
 
Level 1        
 
Level 2        
 
Level 3        
Money Markets and Cash Equivalents
$
16,756,666

 
$
16,756,666

 
$
—

 
$
—

U.S. Government Securities
68,284,392

 
16,542,003

 
51,742,389

 
—

Corporate Debt
12,984,331

 
—

 
12,984,331

 
—

Certificates of Deposit
14,703,812

 
—

 
14,703,812

 
—

Vuzix Corporation
1,433,102

 
1,433,102

 
—

 
—

 
$
114,162,303

 
$
34,731,771

 
$
79,430,532

 
$
—
Available-for-sale Securities
Investments in available-for-sale marketable debt securities are as follows at December 27, 2014 and December 28, 2013:
 
 
 
Amortized Cost
 
Unrealized Gains
 
Unrealized Losses
 
Fair Value
 
2014
 
2013
 
2014
 
2013
 
2014
 
2013
 
2014
 
2013
U.S. government and agency backed securities
$
57,897,914

 
$
68,970,505

 
$
—

 
$
—

 
$
(200,772
)
 
$
(686,113
)
 
$
57,697,142

 
$
68,284,392

Corporate debt and certificates of deposits
18,564,823

 
27,767,513

 
—

 
—

 
(38,830
)
 
(79,370
)
 
18,525,993

 
27,688,143

Total
$
76,462,737

 
$
96,738,018

 
$
—

 
$
—

 
$
(239,602
)
 
$
(765,483
)
 
$
76,223,135

 
$
95,972,535
Investments Classified by Contractual Maturity Date
The contractual maturity of the Company’s marketable debt securities is as follows at December 27, 2014:
 
 
Less than
One year
 
One to
Five years
 
Greater than
Five years
 
Total
U.S. government and agency backed securities
$
14,618,790

 
$
35,548,345

 
$
7,530,007

 
$
57,697,142

Corporate debt and certificates of deposits
15,883,913

 
1,680,830

 
961,250

 
18,525,993

Total
$
30,502,703

 
$
37,229,175

 
$
8,491,257

 
$
76,223,135