5. Leases (Tables)

6 Months Ended

Jun. 30, 2019

Leases [Abstract]

Lease maturity

	June 30, 2019
Maturity of Lease Liabilities	Lease Payments
2019 (remaining)	$	53,113
2020		106,226
Total undiscounted operating lease payments	$	159,339
Less: Imputed interest		(7,617	)
Present value of operating lease liabilities	$	151,722
Balance Sheet Classification
Operating lease liabilities	$	99,564
Long-term operating lease liabilities		52,158
Total operating lease liabilities	$	151,722
Other Information
Weighted-average remaining lease term for operating leases		1.50
Weighted-average discount rate for operating leases		10.0	%

Supplemental cash flow information related to operating leases

	Six Months Ended June 30,
	2019		2018
Operating cash flow information:
Amounts included in measurement of lease liabilities	$	271,333	$	––
Non-cash activities:
Right-of-use assets obtained in exchange for lease obligations	$	395,565	$	––