CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Sep. 30, 2017	Dec. 31, 2016	Sep. 30, 2016
CONSOLIDATED BALANCE SHEETS
Convertible preferred stock, par value (in dollars per share)	$ 0.10	$ 0.10	$ 0.10
Convertible preferred stock, shares authorized	50,000	50,000	50,000
Convertible preferred stock, shares issued	50,000	50,000	50,000
Convertible preferred stock, shares outstanding	50,000	50,000	50,000
Common stock, par value (in dollars per share)	$ 0.10	$ 0.10	$ 0.10
Common stock, shares authorized	100,000,000	100,000,000	100,000,000
Common stock, shares issued	13,330,849	13,239,125	13,082,000
Common stock, shares outstanding	13,330,849	13,239,125	13,082,000