Fair Value Measurements (Details) - Recurring - USD ($)	Dec. 31, 2018	Dec. 31, 2017
Cash equivalents:
Total cash equivalents	$ 0	$ 0
Derivative liabilities:
Derivative instruments, fair value	498,086	445,838
Total derivative liabilities measured at fair value	498,086	445,838
Total assets and liabilities measured at fair value	498,086
Money market funds and commercial paper
Cash equivalents:
Total cash equivalents	0	0
Fair Value, Inputs, Level 1
Cash equivalents:
Total cash equivalents	0	0
Derivative liabilities:
Derivative instruments, fair value	0	0
Total derivative liabilities measured at fair value	0	0
Total assets and liabilities measured at fair value	0	0
Fair Value, Inputs, Level 1 | Money market funds and commercial paper
Cash equivalents:
Total cash equivalents	0	0
Fair Value, Inputs, Level 2
Cash equivalents:
Total cash equivalents	0	0
Derivative liabilities:
Derivative instruments, fair value	0	0
Total derivative liabilities measured at fair value	0	0
Total assets and liabilities measured at fair value	0	0
Fair Value, Inputs, Level 2 | Money market funds and commercial paper
Cash equivalents:
Total cash equivalents	0	0
Fair Value, Inputs, Level 3
Cash equivalents:
Total cash equivalents	0	0
Derivative liabilities:
Derivative instruments, fair value	498,086	445,838
Total derivative liabilities measured at fair value	498,086	445,838
Total assets and liabilities measured at fair value	498,086	445,838
Fair Value, Inputs, Level 3 | Money market funds and commercial paper
Cash equivalents:
Total cash equivalents	$ 0	$ 0