Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Current Assets:
Accounts receivable, allowance for doubtful accounts	$ 417	$ 399
Shareholders' Equity:
Common stock, shares authorized	480,000,000	240,000,000
Common stock, shares, issued	123,332,444	122,035,177
Common stock, shares outstanding	123,332,444	122,035,177