Condensed Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
Condensed Consolidated Balance Sheets [Abstract]
Accounts receivable, allowance	$ 20	$ 9
Common stock, shares authorized	800,000,000	800,000,000
Common stock, no par value
Common stock, shares issued	298,672,792	297,746,376
Common stock, shares outstanding	298,672,792	297,746,376