CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Series A Preferred Stock [Member]
Preferred Stock, Shares Outstanding	1	1
Preferred stock, par value (in dollars per share)	$ 0.08	$ 0.08
Series B Preferred Stock [Member]
Preferred Stock, Shares Outstanding	200,000	200,000
Preferred stock, par value (in dollars per share)	$ 0.08	$ 0.08
Common Class A [Member]
Common stock	$ 11,476	$ 10,864
Common stock, shares issued (in shares)	143,449,913	135,804,221
Common stock, par value (in dollars per share)	$ 0.08	$ 0.08
Common Class B [Member]
Common stock	$ 0	$ 0
Common stock, shares issued (in shares)
Common stock, par value (in dollars per share)	$ 0.08	$ 0.08