XML 29 R20.htm IDEA: XBRL DOCUMENT v3.10.0.1
2. Per Share Data (Details Narrative) - USD ($)
3 Months Ended 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Notes to Financial Statements        
Net income (loss) $ 1,799,000 $ 365,000 $ 3,492,000 $ 424,000