Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Consolidated Balance Sheets [Abstract]
Accounts and other receivables, allowance for doubtful accounts and sales returns	$ 3,143	$ 3,539
Common stock, no par value
Common stock, shares issued	32,122,794	32,057,281
Common stock, shares outstanding	32,122,794	32,057,281