XML 52 R41.htm IDEA: XBRL DOCUMENT v3.20.2
Variable Interest Entities - Additional Information (Details) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Variable Interest Entity [Line Items]        
Net income (loss) $ (7,859) $ (2,959) $ (3,152) $ 6,783
Variable Interest Entity, Primary Beneficiary        
Variable Interest Entity [Line Items]        
Revenues 165 3,100 403 7,800
Net income (loss) $ 150 $ 1,900 $ 339 $ 4,700