Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements Change in fair value (Details)

v3.20.2
Fair Value Measurements Change in fair value (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Fair Value Measurement Inputs and Valuation Techniques [Line Items]        
Change in fair value $ (434) $ (1,400) $ (398) $ (1,700)
Derivative        
Fair Value Measurement Inputs and Valuation Techniques [Line Items]        
Change in fair value $ 105   $ 105