Organization and Summary of Significant Accounting Policies (Narrative) (Details) (USD $)	3 Months Ended			1 Months Ended	3 Months Ended													3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Dec. 31, 2013	Feb. 28, 2014 Trucks [Member]	Mar. 31, 2014 Trucks [Member]	Mar. 31, 2014 Production Services Segment [Member] coiled_tubing_units well_service_rigs wireline_tubing_units	Mar. 31, 2014 Production Services Segment [Member] Fishing and Rental Tools and Equipment [Member]	Mar. 31, 2014 Production Services Segment [Member] 550 Horsepower [Member] well_service_rigs	Mar. 31, 2014 Production Services Segment [Member] 600 Horsepower [Member] well_service_rigs	Mar. 31, 2014 Drilling Services Segment [Member] drilling_rigs	Mar. 31, 2014 Drilling Services Segment [Member] Colombia [Member] drilling_rigs	Mar. 31, 2014 Drilling Services Segment [Member] Colombia [Member] Drilling Rigs [Member] drilling_rigs	Dec. 31, 2013 Drilling Services Segment [Member] Colombia [Member] Drilling Rigs [Member] drilling_rigs	Mar. 31, 2014 Term Contract [Member] Drilling Services Segment [Member] Currently Under Drilling Contract [Member] drilling_rigs	Mar. 31, 2014 Term Contract [Member] Drilling Services Segment [Member] Currently Under Drilling Contract [Member] Colombia [Member] drilling_rigs	Mar. 31, 2014 Term Contract [Member] Drilling Services Segment [Member] Expected to become active within one month [Member] Colombia [Member] drilling_rigs	Mar. 31, 2014 Turnkey Drilling Contract [Member] Drilling Services Segment [Member]	Mar. 31, 2014 Daywork Drilling Contract [Member]	Mar. 31, 2014 Daywork Drilling Contract [Member] Drilling Services Segment [Member]
Business
Drilling Rigs										62	8	5	5	43	8	2
Well Servicing Rigs						109		99	10
Wireline Units						120
Coiled Tubing Units						13
Property, Plant and Equipment, Gross	$ 1,740,920,000		$ 1,724,124,000				$ 17,400,000
Revenue Recognition
Deferred revenues	2,159,000		699,000
Unbilled Accounts Receivable
Billing Invoice Interval, Period																		15 days
Unbilled receivables	44,792,000		49,535,000			5,600,000											500,000		38,700,000
Property and Equipment [Abstract]
Interest Costs Capitalized	0	800,000
Gain (Loss) on Disposition of Property Plant Equipment	1,400,000	300,000			1,100,000
Proceeds from sale of property and equipment	5,516,000	1,567,000		4,500,000
Trucks, number in fleet				40
Net property and equipment	926,929,000		937,657,000	3,400,000
Construction in Progress, Gross	36,300,000		19,400,000
Assets Held-for-sale, Long Lived	$ 900,000