Amortized
Cost

Gross
Unrealized
Gains

Gross
Unrealized
Losses

Fair Value

December 31, 2012

Cash

$

254,267

$

—

$

—

$

254,267

Cash equivalents (money market accounts)

8,217,259

—

(252

)

8,217,007

Marketable debt securities, current

13,901,782

—

(1,104

)

13,900,678

Total cash, cash equivalents, and marketable securities

$

22,373,308

$

—

$

(1,356

)

$

22,371,952

December 31, 2011

Cash

$

291,093

$

—

$

—

$

291,093

Cash equivalents (money market accounts)

13,020,168

—

13,020,168

Marketable equity securities, current

3,283,209

—

(2,618

)

3,280,591

Total cash, cash equivalents, and marketable securities

$

16,594,470

$

—

$

(2,618

)

$

16,591,852