XML 93 R66.htm IDEA: XBRL DOCUMENT v3.10.0.1
Inventory Narrative (Details) - USD ($)
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Inventory [Line Items]      
Inventory $ 5,491,000 $ 20,855,000  
Purchases from Affiliates      
Inventory [Line Items]      
Inventory Write-down $ 200,000 $ 0 $ 0