Consolidated Balance Sheets (Parentheticals) (USD $) In Thousands, except Share data, unless otherwise specified	Dec. 31, 2012	Dec. 31, 2011
Statement of Financial Position [Abstract]
Allowance for doubtful accounts	$ 60	$ 149
Common Stock:
Par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	50,000,000	50,000,000
Common stock, sharse issued (in shares)	9,163,462	9,163,462
Common stock, shares outstanding (in shares)	9,098,152	9,098,152
Treasury stock (in shares)	94,744