Condensed Consolidated Balance Sheets Parenthetical (USD $) In Thousands, except Share data, unless otherwise specified	Mar. 31, 2012	Dec. 31, 2011
Condensed Consolidated Balance Sheets Parenthetical [Abstract]
Accounts receivable, allowances	$ 116	$ 131
Common stock, par value	$ 0.01	$ 0.01
Common stock, authorized	10,000,000	10,000,000
Common stock, issued	2,635,320	2,628,188
Common stock, outstanding	2,599,866	2,592,734
Treasury stock, shares	35,454	35,454