Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Allowance for Doubtful Accounts Receivable, Current	$ 498	$ 498
Preferred Stock, Par or Stated Value Per Share	$ 0.001	$ 0.001
Preferred Stock, Shares Authorized	2,000,000	2,000,000
Preferred Stock, Shares Issued	0	0
Common Stock, Par or Stated Value Per Share	$ 0.001	$ 0.001
Common Stock, Shares Authorized	80,000,000	80,000,000
Common Stock, Shares, Issued	29,690,354	28,929,043
Common Stock, Shares, Outstanding	27,854,553	27,092,242
Treasury Stock, Shares	1,835,801	1,836,801