Consolidated Balance Sheets (Parenthetical) - USD ($)	Dec. 31, 2015	Dec. 31, 2014
Consolidated Balance Sheets [Abstract]
Accounts receivable, allowance	$ 28,000	$ 22,294
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	10,000,000	10,000,000
Common stock, shares issued	4,238,430	4,201,371
Common stock, shares outstanding	4,238,430	4,201,371