XML 57 R36.htm IDEA: XBRL DOCUMENT v3.8.0.1
Inventory (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Dec. 31, 2016
Inventory [Line Items]          
Inventories $ 7,891,000   $ 7,891,000   $ 8,875,000
Cost of goods sold [Member]          
Inventory [Line Items]          
Inventory write-down $ (300,000) $ 0 $ (300,000) $ 0