4. Commitments and Contingencies (Tables)

6 Months Ended

Jun. 30, 2020

Commitments and Contingencies Disclosure [Abstract]

Minimum annual royalty payments

Year ending December 31,
2020 remaining:	$	2,550,000
2021:	$	4,300,000
2022:	$	4,300,000
2023:	$	4,300,000
2024:	$	4,300,000
2025:	$	4,300,000