Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Mar. 31, 2014	Dec. 31, 2013
Statement of Financial Position [Abstract]
Trade accounts receivable, allowance for doubtful accounts	$ 45,000	$ 93,000
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	12,000,000	12,000,000
Common stock, shares issued	8,864,888	8,749,888
Number of treasury shares delievered in connection with stock awards and stock option exercises	64,574	79,941