CONDENSED CONSOLIDATED BALANCE SHEETS (UNAUDITED) (Parenthetical) - USD ($)	Mar. 31, 2016	Dec. 31, 2015
CURRENT ASSETS:
Accounts receivable, allowance for doubtful accounts	$ 52,000	$ 52,000
STOCKHOLDERS' EQUITY:
Preferred stock - shares authorized (in shares)	10,000,000	10,000,000
Preferred stock - shares outstanding (in shares)	0	0
Common stock - par value (in dollars per share)	$ 0.01
Common stock - shares authorized (in shares)	100,000,000	100,000,000
Common stock - shares issued (in shares)	9,650,707	9,628,248
Common stock - shares outstanding (in shares)	9,650,707	9,628,248