Annual report pursuant to Section 13 and 15(d)

Contingent Consideration Arrangement (Details)

v3.19.3.a.u2
Contingent Consideration Arrangement (Details)
 12 Months Ended
Dec. 31, 2019
USD ($)
$ / shares
Derivative [Line Items]  
Derivative, credit risk related contingent features, payment to be received, denominator (in dollars per share) $ 8.03
Derivative Threshold Two | Minimum  
Derivative [Line Items]  
Derivative, credit risk related contingent features, commodity price threshold (in dollars per share) 52.62
Derivative Threshold Two | Maximum  
Derivative [Line Items]  
Derivative, credit risk related contingent features, commodity price threshold (in dollars per share) $ 60.65
Derivative Threshold One  
Derivative [Line Items]  
Payment to be received | $ $ 150,000
Derivative Threshold Three  
Derivative [Line Items]  
Payment to be received | $ $ 0