Organization and Summary of Significant Accounting Policies (Tables)

9 Months Ended

Sep. 30, 2013

Organization, Consolidation and Presentation of Financial Statements [Abstract]

Schedule of Long-Lived Assets, by Reporting Segment

Our Drilling Services Segment provides contract land drilling services with its fleet of 62 drilling rigs which are currently assigned to the following divisions:

Drilling Division	Rig Count
South Texas	13
East Texas	1
West Texas	18
North Dakota	11
Utah	7
Appalachia	4
Colombia	8
	62

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Drilling Services Segment—Our Drilling Services Segment provides contract land drilling services to a diverse group of oil and gas exploration and production companies with its fleet of 62 drilling rigs which are currently assigned to the following divisions:

Drilling Division	Rig Count
South Texas	13
East Texas	1
West Texas	18
North Dakota	11
Utah	7
Appalachia	4
Colombia	8
	62

Drilling Contracts

Drilling Contracts

Our drilling contracts generally provide for compensation on either a daywork, turnkey or footage basis. Contract terms generally depend on the complexity and risk of operations, the on-site drilling conditions, the type of equipment used, and the anticipated duration of the work to be performed. Spot contracts generally provide for the drilling of a single well and typically permit the client to terminate on short notice. During periods of high rig demand, or for our newly constructed rigs, we enter into longer-term drilling contracts. Currently, we have contracts with terms of six months to four years in duration. As of September 30, 2013, we have 42 drilling rigs operating under term contracts, which if not renewed at the end of their terms, will expire as follows:

		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
United States	36	22	3	5	—	6
Colombia	6	6	—	—	—	—
	42	28	3	5	—	6