Condensed Consolidated Balance Sheets - Unaudited (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Current Assets:
Accounts receivable, allowances	$ 75	$ 131
Stockholders' Equity:
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, authorized (in shares)	10,000,000	10,000,000
Common stock, issued (in shares)	2,635,320	2,628,188
Common stock, outstanding (in shares)	2,599,866	2,592,734
Treasury stock, shares	35,454	35,454