XML 39 R66.htm IDEA: XBRL DOCUMENT v3.20.1
Stock Options (Details)
12 Months Ended
Dec. 31, 2018
$ / shares
Share-based Payment Arrangement [Abstract]  
Annual dividend yield
Expected life (years) 5 years
Risk-free interest rate 2.54%
Expected volatility based on comparable peers 51.20%
Common stock price based on most recent sale of common stock for cash $ 0.40