Organization and Summary of Significant Accounting Policies (Drilling Services Segment) (Details) (Drilling Services Segment [Member])	Mar. 31, 2014 drilling_rigs
Accounting Policies [Line Items]
Drilling Rigs	62
South Texas [Member]
Accounting Policies [Line Items]
Drilling Rigs	14
West Texas [Member]
Accounting Policies [Line Items]
Drilling Rigs	18
North Dakota [Member]
Accounting Policies [Line Items]
Drilling Rigs	11
UTAH
Accounting Policies [Line Items]
Drilling Rigs	7
Appalachia [Member]
Accounting Policies [Line Items]
Drilling Rigs	4
Colombia [Member]
Accounting Policies [Line Items]
Drilling Rigs	8