Condensed Consolidated Balance Sheets-Unaudited (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Current Assets:
Accounts receivable, allowances	$ 57	$ 79
Stockholders' Equity:
Common stock, par value (in dollars per share)	$ 0.01	$ 0.01
Common stock, shares authorized (in shares)	10,000,000	10,000,000
Common stock, shares issued (in shares)	2,656,173	2,648,059
Common stock, shares outstanding (in shares)	2,605,730	2,597,605