Going Concern	12 Months Ended
Dec. 31, 2018
Going Concern
Going Concern	Note 2. Going Concern As of December 31, 2018, the Company had approximate balances of $22.7 million of cash and cash equivalents, $10.8 million of investments available-for-sale, working capital of $33.6 million and an accumulated deficit of $272.4 million. Net cash used in operating activities for the year ended December 31, 2018 was approximately $20.4 million. The Company will require significant additional capital to sustain its operations and make the investments it needs to execute its longer-term business plan. The Company’s existing liquidity is not sufficient to fund its operations and anticipated capital expenditures within one year of the issuance of the accompanying consolidated financial statements. The Company intends to seek additional equity or debt financing; however, there are currently no commitments in place for further financing nor is there any assurance that such financing will be available to the Company on favorable terms, if at all. The Company’s recurring operating losses, net operating cash flow deficits, and an accumulated deficit, raise substantial doubt about the Company’s ability to continue as a going concern for one year from the issuance of the accompanying consolidated financial statements. The consolidated financial statements have been prepared assuming the Company will continue as a going concern. The Company has not made any adjustments to the accompanying consolidated financial statements related to the recoverability and classification of recorded asset amounts and classification of liabilities that might be necessary should the Company be unable to continue as a going concern.

Note 2. Going Concern

As of December 31, 2018, the Company had approximate balances of $22.7 million of cash and cash equivalents, $10.8 million of investments available-for-sale, working capital of $33.6 million and an accumulated deficit of $272.4 million. Net cash used in operating activities for the year ended December 31, 2018 was approximately $20.4 million.

The Company will require significant additional capital to sustain its operations and make the investments it needs to execute its longer-term business plan. The Company’s existing liquidity is not sufficient to fund its operations and anticipated capital expenditures within one year of the issuance of the accompanying consolidated financial statements. The Company intends to seek additional equity or debt financing; however, there are currently no commitments in place for further financing nor is there any assurance that such financing will be available to the Company on favorable terms, if at all.

The Company’s recurring operating losses, net operating cash flow deficits, and an accumulated deficit, raise substantial doubt about the Company’s ability to continue as a going concern for one year from the issuance of the accompanying consolidated financial statements. The consolidated financial statements have been prepared assuming the Company will continue as a going concern. The Company has not made any adjustments to the accompanying consolidated financial statements related to the recoverability and classification of recorded asset amounts and classification of liabilities that might be necessary should the Company be unable to continue as a going concern.