Organization and Summary of Significant Accounting Policies (Narrative) (Details) (USD $)	3 Months Ended		6 Months Ended				1 Months Ended	6 Months Ended						3 Months Ended										6 Months Ended		3 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013	Dec. 31, 2011	Feb. 28, 2014 Trucks [Member]	Jun. 30, 2014 Trucks [Member]	Jun. 30, 2014 Production Services Segment [Member] well_service_rigs wireline_tubing_units coiled_tubing_units	Jun. 30, 2013 Production Services Segment [Member] coiled_tubing_units	Jun. 30, 2014 Production Services Segment [Member] Fishing and Rental Tools and Equipment [Member]	Jun. 30, 2014 Production Services Segment [Member] 550 Horsepower [Member] well_service_rigs	Jun. 30, 2014 Production Services Segment [Member] 600 Horsepower [Member] well_service_rigs	Jun. 30, 2013 Drilling Services Segment [Member] drilling_rigs	Jun. 30, 2014 Drilling Services Segment [Member] drilling_rigs	Jun. 30, 2014 Drilling Services Segment [Member] Colombia [Member] drilling_rigs	Jun. 30, 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	Jun. 30, 2014 Drilling Services Segment [Member] Estimated to Become Active in 6 Months [Member] drilling_rigs	Jun. 30, 2014 Term Contract [Member] Drilling Services Segment [Member] Currently Under Drilling Contract [Member] drilling_rigs	Jun. 30, 2014 Term Contract [Member] Drilling Services Segment [Member] Currently Under Drilling Contract [Member] Colombia [Member] drilling_rigs	Jun. 30, 2014 Term Contract [Member] Drilling Services Segment [Member] Expected to become active within one month [Member] Colombia [Member] drilling_rigs	Jun. 30, 2014 Turnkey Drilling Contract [Member] Drilling Services Segment [Member]	Jun. 30, 2014 Daywork Drilling Contract [Member]	Jun. 30, 2014 Daywork Drilling Contract [Member] Drilling Services Segment [Member]	Jun. 30, 2013 Fair Value, Inputs, Level 3 [Member] Finite-Lived Intangible Assets [Member]	Jun. 30, 2013 Fair Value, Inputs, Level 3 [Member] Income Approach Valuation Technique [Member] Goodwill [Member]
Accounting Policies [Line Items]
Payments to Acquire Property, Plant, and Equipment			$ 74,567,000	$ 112,179,000
Business
Drilling Rigs Under Term Contract To Be Built																			3
Segment Reporting Information, Disposed Drililng Rigs														2
Significant Acquisitions and Disposals, Gain (Loss) on Sale or Disposal, Pretax														800,000
Impairment charges	0	44,788,000	0	44,788,000
Drilling Rigs															62	8	5	5		44	8	1
Well Servicing Rigs									112			102	10
Wireline Units									121
Coiled Tubing Units									14	13
Property, Plant and Equipment, Gross	1,778,653,000		1,778,653,000		1,724,124,000						17,400,000
Revenue Recognition
Deferred revenues	3,306,000		3,306,000		699,000
Unbilled Accounts Receivable
Billing Invoice Interval, Period																								15 days
Unbilled receivables	52,156,000		52,156,000		49,535,000				4,700,000														400,000		47,100,000
Property and Equipment [Abstract]
Interest Costs Capitalized			100,000	900,000
Gain (Loss) on Disposition of Property Plant Equipment			1,700,000					1,100,000
Proceeds from sale of property and equipment			6,538,000	6,059,000			4,500,000
Trucks, number in fleet							40
Net property and equipment	923,440,000		923,440,000		937,657,000		3,400,000
Construction in Progress, Gross	43,800,000		43,800,000		19,400,000
Assets Held-for-sale, Long Lived	700,000		700,000
Intangible Assets
Sensitivity Analysis of Fair Value, Change in Impairment Due to Change in Assumption, Impact of One Percent Increase of Pricing Assumption																										1,000,000	3,000,000
Impairment of Intangible Assets, Finite-lived		3,100,000
Goodwill, Impairment Loss		41,700,000
Sensitivity Analysis of Fair Value, Change in Impairment Due to Change in Assumption, Impact of One Percent Decrease of Pricing Assumption																										1,000,000
Sensitivity Analysis of Fair Value, Change in Impairment De to Change in Assumption, Impact of One Percent Increase of Utilization Assumption																										1,000,000	2,000,000
Sensitivity Analysis of Fair Value, Change in Impairment Due to Change in Assumption Impact of One Percent Decrease of Utilization Assumption																										1,000,000
Sensitivity Analysis of Fair Value, Change in Impairment Due to Change in Assumption, Impact of Five Percent Decrease of Discount Rate Assumption																											3,500,000
Fair Value Inputs, Discount Rate																											13.00%
Goodwill		0		0		41,700,000
Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property			$ 1,731,000	$ 1,721,000