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Organization and Summary of Significant Accounting Policies (Tables)
 6 Months Ended
Jun. 30, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Schedule of Drilling Long-Lived Assets, by Region
The drilling rigs in our fleet are currently assigned to the following divisions:
Drilling Division
Rig Count
South Texas
6

West Texas
8

North Dakota
5

Appalachia
4

Colombia
8

 
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Schedule of Production Services Long-Lived Assets, by Type [Table Text Block]
As of June 30, 2016, our production services fleets are as follows:
Production Services Fleets
 
 
 
 
550 HP
600 HP
Total
Well servicing rigs, by horsepower (HP) rating
114

11

125

 
 
 
 
 
Offshore
Onshore
Total
Wireline units
6

119
125

Coiled tubing units
5

12

17
Schedule of Drilling Contracts [Table Text Block]
Including these three contracts in Colombia, 14 of our drilling rigs are currently under contract, which if not canceled or renewed prior to the end of their terms, will expire as follows:
 
Spot Market Contracts
 
 
 
Term Contract Expiration by Period
 
 
Total Term Contracts
 
Within
6 Months
 
6 Months
to 1 Year
 
1 Year to
18 Months
 
18 Months
to 2 Years
 
2 to 4 Years
Domestic Rigs:
 
 
 
 
 
 
 
 
 
 
 
 
 
Earning under contract
2

 
7

 
1

 
1

 
1

 
1

 
3

Earning but not working
—

 
2

 
2

 
—

 
—

 
—

 
—

 
 
 
 
 
 
 
 
 
 
 
 
 
 
Colombia Rigs (on standby)
—

 
3

 
1

 
—

 
—

 
—

 
2

 
2

 
12

 
4

 
1

 
1

 
1

 
5