XML 46 R33.htm IDEA: XBRL DOCUMENT v3.3.1.900
Patents and Other Intangible Assets (Details Textual) - USD ($)
3 Months Ended 12 Months Ended
Dec. 31, 2015
Dec. 31, 2015
Dec. 31, 2014
Exploration Abandonment and Impairment Expense $ 588,000 $ 593,000 $ 262,000