Accounts Receivable (Details) - USD ($) $ in Thousands	Dec. 31, 2019	Dec. 31, 2018
Accounts Receivable
Accounts receivable	$ 34,910	$ 32,338
Other accounts receivable from related parties		100
Revenue receivable
Accounts Receivable
Accounts receivable	34,518	28,876
Realized derivative receivable
Accounts Receivable
Accounts receivable	273	2,229
Joint interest billings
Accounts Receivable
Accounts receivable	95	640
Other
Accounts Receivable
Accounts receivable	$ 24	$ 593