Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Current Assets:
Accounts receivable, allowances	$ 34	$ 43
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)	2,745,098	2,696,201
Common stock, shares outstanding (in shares)	2,665,434	2,616,485
Treasury Stock, Shares	79,664	79,716