9. Related Party Transactions	6 Months Ended
Jun. 30, 2018
Related Party Transactions [Abstract]
9. Related Party Transactions	The Company owes Eric McAfee, the Company’s Chairman and CEO, and McAfee Capital, owned by Eric McAfee, $0.4 million in connection with employment agreements and expense reimbursements previously accrued as salaries expense and accrued liabilities. The balance accrued related to these employment agreements was $0.4 million as of June 30, 2018 and December 31, 2017. For the three months ended June 30, 2018 and 2017, the Company expensed $10 thousand and $6 thousand, respectively, to reimburse actual expenses incurred by McAfee Capital and related entities. For the six months ended June 30, 2018 and 2017, the Company expensed $24 thousand and $23 thousand, respectively, to reimburse actual expenses incurred by McAfee Capital and related entities. The Company previously prepaid $0.2 million to Redwood Capital, a company controlled by Eric McAfee, for the Company’s use of flight time on a corporate jet. As of June 30, 2018, $0.1 million remained as a prepaid expense. As consideration for the reaffirmation of guaranties required by Amendment No. 13 to the Note Purchase Agreement which the Company entered into with Third Eye Capital on March 1, 2017, the Company also agreed to pay $0.2 million in consideration to McAfee Capital in exchange for their willingness to provide the guaranties. The balance of $284 thousand and $342 thousand for guaranty fee remained as accrued liability as of June 30, 2018 and December 31, 2017 respectively.

9. Related Party Transactions

6 Months Ended

Jun. 30, 2018

The Company owes Eric McAfee, the Company’s Chairman and CEO, and McAfee Capital, owned by Eric McAfee, $0.4 million in connection with employment agreements and expense reimbursements previously accrued as salaries expense and accrued liabilities. The balance accrued related to these employment agreements was $0.4 million as of June 30, 2018 and December 31, 2017. For the three months ended June 30, 2018 and 2017, the Company expensed $10 thousand and $6 thousand, respectively, to reimburse actual expenses incurred by McAfee Capital and related entities. For the six months ended June 30, 2018 and 2017, the Company expensed $24 thousand and $23 thousand, respectively, to reimburse actual expenses incurred by McAfee Capital and related entities. The Company previously prepaid $0.2 million to Redwood Capital, a company controlled by Eric McAfee, for the Company’s use of flight time on a corporate jet. As of June 30, 2018, $0.1 million remained as a prepaid expense. As consideration for the reaffirmation of guaranties required by Amendment No. 13 to the Note Purchase Agreement which the Company entered into with Third Eye Capital on March 1, 2017, the Company also agreed to pay $0.2 million in consideration to McAfee Capital in exchange for their willingness to provide the guaranties. The balance of $284 thousand and $342 thousand for guaranty fee remained as accrued liability as of June 30, 2018 and December 31, 2017 respectively.