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Financial Instruments (Tables)
 12 Months Ended
Dec. 31, 2016
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 31, 2016 Using:
 
Total
 
Level 1        
 
Level 2        
 
Level 3        
Money Markets and Cash Equivalents
$
15,822,495

 
$
15,822,495

 
$
—

 
$
—

U.S. Government Securities
36,091,261

 
7,144,767

 
28,946,494

 
—

Corporate Debt
7,557,029

 
—

 
7,557,029

 
—

Certificates of Deposit
17,727,111

 
—

 
17,727,111

 
—

GCS Holdings
331,454

 
331,454

 
—

 
—

 
$
77,529,350

 
$
23,298,716

 
$
54,230,634

 
$
—

 
 
 
 
Fair Value Measurement at December 26, 2015 Using:
 
Total
 
Level 1        
 
Level 2        
 
Level 3        
Money Markets and Cash Equivalents
$
19,767,889

 
$
19,767,889

 
$
—

 
$
—

U.S. Government Securities
46,464,663

 
16,381,152

 
30,083,511

 
—

Corporate Debt
6,886,495

 
—

 
6,886,495

 
—

Certificates of Deposit
7,591,733

 
—

 
7,591,733

 
—

GCS Holdings
232,037

 
232,037

 
—

 
—

 
$
80,942,817

 
$
36,381,078

 
$
44,561,739

 
$
—
Available-for-sale Securities
Investments in available-for-sale marketable debt securities are as follows at December 31, 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
$
36,343,817

 
$
46,586,224

 
$
—

 
$
—

 
$
(252,556
)
 
$
(121,561
)
 
$
36,091,261

 
$
46,464,663

Corporate debt and certificates of deposits
25,323,428

 
14,534,247

 
—

 
—

 
(39,288
)
 
(56,019
)
 
25,284,140

 
14,478,228

Total
$
61,667,245

 
$
61,120,471

 
$
—

 
$
—

 
$
(291,844
)
 
$
(177,580
)
 
$
61,375,401

 
$
60,942,891
Investments Classified by Contractual Maturity Date
The contractual maturity of the Company’s marketable debt securities is as follows at December 31, 2016:
 
 
Less than
One year
 
One to
Five years
 
Greater than
Five years
 
Total
U.S. government and agency backed securities
$
14,473,073

 
$
16,690,738

 
$
4,927,450

 
$
36,091,261

Corporate debt and certificates of deposits
22,562,101

 
2,722,039

 
—

 
25,284,140

Total
$
37,035,174

 
$
19,412,777

 
$
4,927,450

 
$
61,375,401