Fair Value Measurements (Details) - USD ($)	Dec. 31, 2015	Dec. 31, 2014	Sep. 16, 2013
Marketable securities:
Marketable securities, fair value	$ 7,420,042	$ 10,900,722
Derivative instruments, fair value	82,024	137,171	$ 200,000
Corporate debt and government securities
Marketable securities:
Marketable securities, fair value	7,400,000	10,900,000
Recurring
Cash equivalents:
Total cash equivalents	2,725,094	2,049,972
Marketable securities:
Marketable securities, fair value	7,420,042	10,900,722
Derivative instruments, fair value	82,024	137,171
Total derivative liabilities measured at fair value	82,024	137,171
Total assets and liabilities measured at fair value	10,227,160	13,087,865
Recurring | Corporate debt and government securities
Marketable securities:
Marketable securities, fair value	7,420,042	10,900,722
Recurring | Money market funds and commercial paper
Cash equivalents:
Total cash equivalents	2,725,094	2,049,972
Recurring | Fair Value, Inputs, Level 1
Cash equivalents:
Total cash equivalents	2,725,094	2,049,972
Marketable securities:
Marketable securities, fair value	0	0
Derivative instruments, fair value	0	0
Total derivative liabilities measured at fair value	0	0
Total assets and liabilities measured at fair value	2,725,094	2,049,972
Recurring | Fair Value, Inputs, Level 1 | Corporate debt and government securities
Marketable securities:
Marketable securities, fair value	0	0
Recurring | Fair Value, Inputs, Level 1 | Money market funds and commercial paper
Cash equivalents:
Total cash equivalents	2,725,094	2,049,972
Recurring | Fair Value, Inputs, Level 2
Cash equivalents:
Total cash equivalents	0	0
Marketable securities:
Marketable securities, fair value	7,420,042	10,900,722
Derivative instruments, fair value	0	0
Total derivative liabilities measured at fair value	0	0
Total assets and liabilities measured at fair value	7,420,042	10,900,722
Recurring | Fair Value, Inputs, Level 2 | Corporate debt and government securities
Marketable securities:
Marketable securities, fair value	7,420,042	10,900,722
Recurring | Fair Value, Inputs, Level 2 | Money market funds and commercial paper
Cash equivalents:
Total cash equivalents	0	0
Recurring | Fair Value, Inputs, Level 3
Cash equivalents:
Total cash equivalents	0	0
Marketable securities:
Marketable securities, fair value	0	0
Derivative instruments, fair value	82,024	137,171
Total derivative liabilities measured at fair value	82,024	137,171
Total assets and liabilities measured at fair value	82,024	137,171
Recurring | Fair Value, Inputs, Level 3 | Corporate debt and government securities
Marketable securities:
Marketable securities, fair value	0	0
Recurring | Fair Value, Inputs, Level 3 | Money market funds and commercial paper
Cash equivalents:
Total cash equivalents	$ 0	$ 0