Balance Sheet (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Dec. 31, 2011	Dec. 31, 2010
Statement of Financial Position [Abstract]
Accounts receivable, allowance for doubtful accounts	$ 2,465	$ 2,198
Preferred Stock Par or Stated Value per Share	$ 0.01	$ 0.01
Preferred Stock Shares Authorized	5,000,000	5,000,000
Common Stock Par or Stated Value per Share	$ 0.01	$ 0.01
Common Stock Shares Authorized	180,000,000	180,000,000
Common Stock Shares Issued	12,646,498	12,178,565
Common Stock Shares Outstanding	12,646,498	12,178,565