Condensed Consolidated Balance Sheets - Unaudited (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Sep. 30, 2012	Dec. 31, 2011
Current Assets:
Accounts receivable, allowances	$ 99	$ 131	[1]
Stockholders' Equity:
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01	[1]
Common stock, authorized (in shares)	10,000,000	10,000,000	[1]
Common stock, issued (in shares)	2,634,409	2,628,188	[1]
Common stock, outstanding (in shares)	2,583,955	2,592,734	[1]
Treasury stock, shares	50,454	35,454	[1]

[1] The Condensed Consolidated Balance Sheet as of December 31, 2011, has been derived from the audited consolidated financial statements at that date, but does not include all of the information and footnotes required by accounting principles generally accepted in the United States for complete financial statements.