Summary of Significant Accounting Policies (Details Narrative) - USD ($) |
3 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|
Mar. 31, 2019 |
Mar. 31, 2018 |
Dec. 31, 2018 |
Dec. 31, 2017 |
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| Cash | $ 12,599,600 | $ 9,946,654 | $ 15,538,849 | $ 185,151 |
| Working capital | 13,995,671 | |||
| Accumulated deficit | 161,750,108 | 159,856,481 | ||
| Net income (loss) | 1,893,627 | (2,204,088) | ||
| Cash balances in excess of FDIC insurance limits | 12,249,662 | $ 17,854,561 | ||
| Revenue recognition, contract liabilities | 245,500 | |||
| Deferred revenue | 83,279 | |||
| Revenues | $ 577,390 | $ 595,920 | ||
| Sales Revenue, Net [Member] | Significant Customer [Member] | ||||
| Concentration risk, percentage | 12.00% | 10.00% | ||
| Accounts Receivable [Member] | Significant Customer [Member] | ||||
| Concentration risk, percentage | 27.00% | 35.00% | ||
| Grant and Rebate [Member] | ||||
| Deferred revenue | $ 99,351 | $ 106,066 | ||
| Revenues | $ 6,714 | $ 16,231 | ||
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- Definition Deferred revenue recognized. No definition available.
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- Definition Working capital. No definition available.
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- Definition Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition The amount of cash deposited in financial institutions as of the balance sheet date that is insured by the Federal Deposit Insurance Corporation. No definition available.
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- Definition For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of revenue recognized that was previously included in balance of obligation to transfer good or service to customer for which consideration from customer has been received or is due. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition The cumulative amount of the reporting entity's undistributed earnings or deficit. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss). Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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