Annual report pursuant to Section 13 and 15(d)

Fair Value Measurements Rollforward (Details)

v3.19.3.a.u2
Fair Value Measurements Rollforward (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]      
Change in fair value $ (141) $ 368 $ 74
Fair value, measurements, recurring      
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]      
Beginning balance 2,798    
Ending balance 2,939 2,798  
Fair value, inputs, level 3 | Fair value, measurements, recurring      
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward]      
Beginning balance 2,798    
Change in fair value (141)    
Ending balance $ 2,939 $ 2,798