Indefinite-lived Intangible Assets and Goodwill (Tables)

6 Months Ended

Jun. 30, 2018

Indefinite-lived Intangible Assets and Goodwill

Schedule of IPR&D asset

	June 30, 2018		December 31,  2017
IPR&D asset:
CRV431	$	3,190,000	$	3,190,000

Schedule of roll-forward of goodwill balance

	Amount
Goodwill balance at January 1, 2018	$	1,870,924
Changes during the six months ended June 30, 2018	—
Goodwill balance at June 30, 2018	$	1,870,924