4. Fair Value Measurements (Details) - USD ($) |
Dec. 31, 2018 |
Dec. 31, 2017 |
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| Fair Value, Inputs, Level 1 [Member] | ||
| Money market accounts | $ 1,706,376 | $ 2,120,269 |
| Total | 1,706,376 | 2,120,269 |
| Fair Value, Inputs, Level 2 [Member] | ||
| Money market accounts | 0 | 0 |
| Total | 0 | 0 |
| Fair Value, Inputs, Level 3 [Member] | ||
| Money market accounts | 0 | 0 |
| Total | $ 0 | $ 0 |
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- Definition Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Fair value portion 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. No definition available.
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