Condensed Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Per Share data	Jun. 30, 2011	Dec. 31, 2010
Accounts receivable, allowance	$ 53	$ 33
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	6,000	6,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.01	$ 0.01
Common Class A [Member]
Common stock, shares authorized	30,000	30,000
Common stock, shares issued	10,371	10,349
Common stock, shares outstanding	10,371	10,349
Common Class B [Member]
Common stock, shares authorized	500	500
Common stock, shares issued	0	0
Common stock, shares outstanding	0	0