CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) - $ / shares	Mar. 31, 2018	Dec. 31, 2017
Statement of Financial Position [Abstract]
Preferred stock, par value (in dollars per share)	$ .001	$ .001
Preferred stock, authorized	1,000,000	1,000,000
Preferred stock, issued
Common stock, par value (in dollars per share)	$ .001	$ .001
Common stock, authorized	100,000,000	100,000,000
Common stock, outstanding	31,282,333	31,241,548
Treasury stock	9,864,805	9,864,805