Fair Value Measures (Tables)

12 Months Ended

Dec. 31, 2018

Fair Value Disclosures [Abstract]

Schedule of Fair Value Assets and Liabilities Measured on Recurring Basis and Nonrecurrent Basis

The Company’s assets and liabilities measured at fair value on a recurring and nonrecurrent basis at December 31, 2018 consisted of the following:

	Fair Value Measurement at December 31, 2018
	Total		Level 1		Level 2		Level 3
Recurring fair value measurements
Cash equivalents — money market fund	$	29,375,509	$	29,375,509	$	—	$	—
Warrant liability		65,000		—		—		65,000

The Company’s assets and liabilities measured at fair value on a recurring and nonrecurrent basis at December 31, 2017 consisted of the following:

	Fair Value Measurement at December 31, 2017
	Total			Level 1		Level 2		Level 3
Recurring fair value measurements
Cash equivalents — money market fund	$	8,940,897		$	8,940,897	$	—	$	—
Restricted cash — money market fund		3,500,000			3,500,000		—		—
Warrant liability		(3,400,869	)				—		(3,400,869	)
Embedded derivative		(27,236	)		—		—		(27,236	)