Consolidated Balance Sheets (Parentheticals) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Property and equipment not subject to amortization	$ 10,784	$ 368,660
Common stock shares issued	52,900	46,981
Common stock shares outstanding	52,900	46,981
Treasury Stock	72	72
Series C Preferred Stock [Member]
Preferred stock liquidation preference	14,800	37,000
Series B Preferred Stock [Member]
Preferred stock liquidation preference	$ 1,971	$ 3,745