12. Related Party Transactions	12 Months Ended
Dec. 31, 2017
Related Party Transactions [Abstract]
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 December 31, 2017 and December 31, 2016. For the years ended December 31, 2017 and 2016, the Company expensed $0.1 million each 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 December 31, 2017, $0.1 million remained as a prepaid expense related to Redwood Capital. 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 guarantees. The balance of $342 thousand and $156 thousand for guarantee fee remained as accrued liability as of December 31, 2017 and December 31, 2016 respectively. The Company owes various former and current Board Members amounts totaling $1.7 million and $1.5 million at both December 31, 2017 and 2016, respectively, in connection with board compensation fees, which are included in accounts payable on the balance sheet. For each of the years ended December 31, 2017 and 2016, the Company expensed $0.4 million each year, in connection with board compensation fees.

12. Related Party Transactions

12 Months Ended

Dec. 31, 2017

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 December 31, 2017 and December 31, 2016. For the years ended December 31, 2017 and 2016, the Company expensed $0.1 million each 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 December 31, 2017, $0.1 million remained as a prepaid expense related to Redwood Capital. 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 guarantees. The balance of $342 thousand and $156 thousand for guarantee fee remained as accrued liability as of December 31, 2017 and December 31, 2016 respectively.

The Company owes various former and current Board Members amounts totaling $1.7 million and $1.5 million at both December 31, 2017 and 2016, respectively, in connection with board compensation fees, which are included in accounts payable on the balance sheet. For each of the years ended December 31, 2017 and 2016, the Company expensed $0.4 million each year, in connection with board compensation fees.