Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Mar. 31, 2019	Dec. 31, 2018
Statement of Financial Position [Abstract]
Preferred stock, par value	$ .001	$ .001
Preferred stock, undesignated shares authorized	1,000,000	1,000,000
Preferred stock, shares issued
Preferred stock, shares outstanding
Common stock, par value	$ .001	$ .001
Common stock, shares authorized	8,200,000	8,200,000
Common stock, shares issued	2,921,488	2,919,542
Common stock, shares outstanding	2,731,548	2,733,601
Treasury stock, shares	189,940	185,941