CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Accounts receivable, allowance	$ 7,328	$ 7,296
Accounts payable, including contractor payables	$ 33,455	$ 32,275
Preferred Stock [Member]
Preferred stock, par value	$ 0.0001	$ 0.0001
Preferred stock, shares authorized	100,000,000	100,000,000
Preferred stock, shares issued
Preferred stock, shares outstanding
Series A Preferred Stock [Member]
Preferred stock, par value	$ 0.0001	$ 0.0001
Preferred stock, shares authorized	1	1
Preferred stock, shares issued
Preferred stock, shares outstanding
Common Stock [Member]
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, shares authorized	865,000,000	865,000,000
Common stock, shares issued	305,968,821	297,175,777
Common stock, shares outstanding	305,968,821	297,175,777
Nonvoting Common Stock [Member]
Common stock, par value	$ 0.0001	$ 0.0001
Common stock, shares authorized	135,000,000	135,000,000
Common stock, shares issued	106,767,684	55,881,512
Common stock, shares outstanding	106,767,684	55,881,512