CONDENSED CONSOLIDATED BALANCE SHEETS (Parentheticals) - USD ($) |
Jun. 30, 2019 |
Dec. 31, 2018 |
|---|---|---|
| Class of Stock [Line Items] | ||
| Common Stock, Value | $ 1,426,000 | $ 1,412,000 |
| Common Class A [Member] | ||
| Class of Stock [Line Items] | ||
| Common Stock, Value | 1,386,000 | 1,372,000 |
| Common Class B [Member | ||
| Class of Stock [Line Items] | ||
| Common Stock, Value | 40,000 | 40,000 |
| Common Class C [Member] | ||
| Class of Stock [Line Items] | ||
| Common Stock, Value | $ 0 | $ 0 |