Organization and Summary of Significant Accounting Policies (Narrative) (Details) - Long Lived Assets Held-for-sale, Name [Domain] - Asset Class [Domain] $ in Thousands	3 Months Ended				6 Months Ended		12 Months Ended	18 Months Ended
	Jun. 30, 2015 USD ($) well_service_rigs drilling_rigs coiled_tubing_units wireline_tubing_units	Mar. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Jun. 30, 2014 USD ($) drilling_rigs	Jun. 30, 2015 USD ($) well_service_rigs drilling_rigs coiled_tubing_units wireline_tubing_units	Jun. 30, 2014 USD ($) drilling_rigs	Dec. 31, 2015 drilling_rigs	Mar. 31, 2016 USD ($)
Business
Impairment charges | $	$ 71,329			$ 0	$ 77,319	$ 0
Gain (Loss) on Contract Termination | $	16,000	$ 11,300	$ 300
Unbilled Accounts Receivable
Unbilled receivables | $	$ 12,635		38,002		12,635
Related Party Transactions [Abstract]
Related Party Transaction, Amounts of Transaction | $					$ 100	$ 200
UNITED STATES
Business
Drilling Divisions	4				4
Production Services Segment [Member]
Business
Well Servicing Rigs | well_service_rigs	121				121
Wireline Units | wireline_tubing_units	125				125
Coiled Tubing Units | coiled_tubing_units	17				17
Unbilled Accounts Receivable
Unbilled receivables | $	$ 800		4,400		$ 800
Production Services Segment [Member] | Well Service Rigs [Member]
Related Party Transactions [Abstract]
Utilization Rate, Percentage	72.50%
Production Services Segment [Member] | Coiled Tubing Units [Member]
Related Party Transactions [Abstract]
Utilization Rate, Percentage	24.30%
Production Services Segment [Member] | 550 Horsepower [Member]
Business
Well Servicing Rigs | well_service_rigs	110				110
Production Services Segment [Member] | 600 Horsepower [Member]
Business
Well Servicing Rigs | well_service_rigs	11				11
Drilling Services Segment [Member]
Business
Drilling Rigs	35				35
Drilling Rig, 2015 New-Build	5				5
Drilling Services Segment [Member] | Mechanical and Lower Horsepower Drilling Rigs [Member]
Business
Drilling Rigs	3				3
Drilling Rigs Held for Sale	1				1
Disposed Drilling Rigs					27
Drilling Services Segment [Member] | Colombia [Member]
Business
Drilling Rigs	8				8
Drilling Rigs on which Impairment Taken	8				8
Drilling Services Segment [Member] | Colombia [Member] | Drilling Rigs [Member]
Business
Drilling Rigs	5			5	5	5
Impairment charges | $	$ 50,200
Drilling Services Segment [Member] | UNITED STATES | Non-AC not pad-capable electric drilling rigs [Member]
Business
Drilling Rigs	6				6
Drilling Rigs on which Impairment Taken	6				6
Impairment charges | $	$ 9,700
Drilling Services Segment [Member] | Received Early Termination Notice on Contract [Member]
Business
Drilling Rigs	16				16
Drilling Services Segment [Member] | Active [Member] | Currently Under Drilling Contract [Member]
Business
Drilling Rigs	18				18
Drilling Services Segment [Member] | Estimated to Become Active Between 3 and 6 Months [Member]
Business
Drilling Rigs Under Construction	1				1
Drilling Services Segment [Member] | Estimated to Become Active in 3 Months [Member]
Business
Drilling Rigs Under Construction	3				3
Drilling Services Segment [Member] | Being marketed [Member] | Colombia [Member]
Business
Drilling Rigs	8				8
Term Contract [Member] | Drilling Services Segment [Member] | Currently Under Drilling Contract [Member]
Business
Drilling Rigs	15				15
Term Contract [Member] | Drilling Services Segment [Member] | Currently Under Drilling Contract [Member] | UNITED STATES
Business
Drilling Rigs	15				15
Term Contract [Member] | Drilling Services Segment [Member] | Received Early Termination Notice on Contract [Member]
Business
Drilling Rigs	7				7
Term Contract [Member] | Drilling Services Segment [Member] | Active [Member] | Currently Under Drilling Contract [Member]
Business
Drilling Rig, 2015 New-Build	1				1
Term Contract [Member] | Drilling Services Segment [Member] | Estimated to Become Active in 3 Months [Member] | Currently Under Drilling Contract [Member]
Business
Drilling Rigs Under Construction	3				3
Turnkey Drilling Contract [Member] | Drilling Services Segment [Member]
Unbilled Accounts Receivable
Unbilled receivables | $			800
Daywork Drilling Contract [Member]
Unbilled Accounts Receivable
Billing Invoice Interval, Period					15 days
Daywork Drilling Contract [Member] | Drilling Services Segment [Member]
Unbilled Accounts Receivable
Unbilled receivables | $	$ 11,800		$ 32,800		$ 11,800
Subsequent Event [Member]
Business
Gain (Loss) on Contract Termination | $								$ 53,000
Subsequent Event [Member] | Drilling Services Segment [Member]
Business
Percentage of Drilling Rigs Capable of Drilling Horizontally							95.00%
Subsequent Event [Member] | Drilling Services Segment [Member] | Estimated to be Owned [Member]
Business
Drilling Rigs							39