CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)	Jun. 30, 2015	Dec. 31, 2014
Accounts receivable, allowance for sales returns and doubtful accounts	$ 426,000	$ 354,000
Common stock, par value	$ 0.001	$ 0.001
Common stock, shares authorized	20,000,000	20,000,000
Common stock, issued	12,393,318	12,365,690
Common stock, outstanding	12,023,235	12,075,764
Common stock in treasury, shares	103,130	0