Goodwill and Intangible Assets (Tables)

6 Months Ended

Jun. 30, 2014

Goodwill — Goodwill by operating segment as of June 30, 2014 and changes for the six 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		—		11,655		11,655

Balance June 30, 2014	$	86,234	$	79,230	$	165,464

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 June 30, 2014 and December 31, 2013 (in thousands):


	June 30, 2014							December 31, 2013
	Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount		Gross Carrying Amount		Accumulated Amortization			Net Carrying Amount
Customer relationships	$	25,500	$	(13,661	)	$	11,839	$	25,500	$	(11,839	)	$	13,661