Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Current Assets:
Accounts receivable, allowance for doubtful accounts	$ 685	$ 417
Shareholders' Equity:
Common stock, shares authorized	480,000,000	480,000,000
Common stock, shares issued	126,119,760	123,332,444
Common stock, shares outstanding	126,119,760	123,332,444