CONSOLIDATED BALANCE SHEETS (Parentheticals) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Class of Stock [Line Items]
Preferred Stock, Par Value Per Share	$ 0.01	$ 0.01
Preferred Stock, Shares Authorized	25,000,000	25,000,000
Preferred Stock, Shares Issued and Outstanding	0	11
Common Stock, Value	$ 1,437	$ 407
Common Class A [Member]
Class of Stock [Line Items]
Common Stock, Value	$ 1,397	$ 335
Common Stock, Par Value Per Share	$ 0.01	$ 0.01
Common Stock, Shares Authorized	200,000,000	200,000,000
Common Stock, Shares Issued and Outstanding	139,675,781	33,510,184
Common Class B [Member]
Class of Stock [Line Items]
Common Stock, Value	$ 40	$ 72
Common Stock, Par Value Per Share	$ 0.01	$ 0.01
Common Stock, Shares Authorized	75,000,000	75,000,000
Common Stock, Shares Issued and Outstanding	4,045,199	7,197,532
Common Class C Member
Class of Stock [Line Items]
Common Stock, Value	$ 0	$ 0
Common Stock, Par Value Per Share	$ 0.01	$ 0.01
Common Stock, Shares Authorized	50,000,000	50,000,000
Common Stock, Shares Issued and Outstanding	0	0