Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - $ / shares	Mar. 31, 2019	Dec. 31, 2018
Stockholders' equity:
Common stock, par value	$ .00	$ .00
Common stock, authorized shares	40,000,000	40,000,000
Common stock, issued shares	21,683,032	21,583,032
Common stock, outstanding shares	21,683,032	21,583,032