Commitments	12 Months Ended
Dec. 31, 2017
Commitments And Contingencies Disclosure [Abstract]
Commitments	4. Commitments In December 2016, the Company entered into an operating lease for office space in Solana Beach, California. The lease commenced on January 1, 2017 with an expiration date of December 31, 2018. The Company has an option to extend the lease for an additional two years subject to specified prior written notice. The lease contains annual rent increases. Rent expense for 2017 and 2016 was approximately $135,000 and $116,000, respectively. The Company also pays pass through costs and utility costs, which are expensed as incurred. As of December 31, 2017, the Company has future minimum lease payments under its facility lease in 2018 of approximately $139,000.

Commitments

12 Months Ended

Dec. 31, 2017

Commitments And Contingencies Disclosure [Abstract]

4. Commitments

In December 2016, the Company entered into an operating lease for office space in Solana Beach, California. The lease commenced on January 1, 2017 with an expiration date of December 31, 2018. The Company has an option to extend the lease for an additional two years subject to specified prior written notice. The lease contains annual rent increases.

Rent expense for 2017 and 2016 was approximately $135,000 and $116,000, respectively. The Company also pays pass through costs and utility costs, which are expensed as incurred.

As of December 31, 2017, the Company has future minimum lease payments under its facility lease in 2018 of approximately $139,000.