Goodwill and Intangible Assets (Tables)

3 Months Ended

Mar. 31, 2014

Goodwill — Goodwill by operating segment as of March 31, 2014 and changes for the three months then ended are as follows (in thousands):


	Contract Drilling		Pressure Pumping		Total
Balance December 31, 2013	$	86,234	$	67,575	$	153,809
Changes to goodwill		—		—		—

Balance March 31, 2014	$	86,234	$	67,575	$	153,809

Gross Carrying Amount and Accumulated Amortization of Customer Relationships

The following table presents the gross carrying amount and accumulated amortization of the customer relationships as of March 31, 2014 and December 31, 2013 (in thousands):


	March 31, 2014							December 31, 2013
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Customer relationships	$	25,500	$	(12,750	)	$	12,750	$	25,500	$	(11,839	)	$	13,661