Condensed Consoldiated Balance Sheets Parenthetical (USD $) In Thousands, except Share data	Jun. 30, 2011	Dec. 31, 2010
Current Assets:
Accounts receivable, allowance for doubtful accounts	$ 388	$ 387
Shareholders' Equity:
Common shares, shares authorized	240,000,000	240,000,000
Common shares, shares issued	81,205,635	80,682,093
Common shares, shares outstanding	81,205,635	80,682,093