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