Condensed Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data	Jun. 30, 2011	Dec. 31, 2010
Condensed Consolidated Balance Sheets
Cash and cash equivalents, restricted cash	$ 18,251	$ 18,000
Preferred stock, par value	$ 1	$ 1
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.1	$ 0.1
Common stock, shares authorized	145,000,000	145,000,000
Common stock, shares issued	84,655,474	78,215,189
Common stock, shares outstanding	84,655,474	78,215,189