CONSOLIDATED BALANCE SHEETS (Parentheticals) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Class of Stock [Line Items]
Common Stock, Value	$ 406	$ 407
Common Class A [Member]
Class of Stock [Line Items]
Common Stock, Value	334	335
Common Class B [Member]
Class of Stock [Line Items]
Common Stock, Value	72	72
Common Class C Member
Class of Stock [Line Items]
Common Stock, Value	$ 0	$ 0