Organization and Summary of Significant Accounting Policies (Production Services Business) (Details)	Jun. 30, 2019 coiled_tubing_units well_service_rigs wireline_tubing_units
Well Servicing [Member] | Production Services [Member]
Accounting Policies [Line Items]
Well Servicing Rigs	125
Well Servicing [Member] | 550 Horsepower [Member]
Accounting Policies [Line Items]
Well Servicing Rigs	113
Well Servicing [Member] | 600 Horsepower [Member]
Accounting Policies [Line Items]
Well Servicing Rigs	12
Wireline Services [Member] | Production Services [Member]
Accounting Policies [Line Items]
Wireline Units | wireline_tubing_units	95
Coiled Tubing Services [Member] | Production Services [Member]
Accounting Policies [Line Items]
Coiled Tubing Units | coiled_tubing_units	9