Condensed Consolidated Balance Sheets (Parenthetical) - USD ($)	Sep. 30, 2016	Dec. 31, 2015
Balance Sheets Parenthetical [Abstract]
Allowance for doubtful accounts receivable	$ 605,000	$ 1,512,000
Allowance for doubtful accounts financial receivables current	$ 0	$ 0
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares issued	0	0
Common stock, shares authorized	50,000,000	50,000,000
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares issued	14,571,000	14,211,000
Common stock, shares outstanding	13,766,000	13,467,000
Treasury stock, shares	805,000	744,000