Goodwill (Tables)

12 Months Ended

Dec. 31, 2013

Goodwill [Abstract]

Schedule of changes in the carrying value of goodwill

Changes in the carrying value of goodwill for each reporting unit are as follows (in thousands):

	Energy Chemical Technologies		Consumer and Industrial Chemical Technologies		Downhole Tools			TeledriftTM			Artificial Lift Technologies			Total
Balance at December 31, 2011:
Goodwill	$	11,610	$	—	$	43,009		$	46,396		$	5,861		$	106,876
Accumulated impairment losses	—		—		(43,009		)	(31,063		)	(5,861		)	(79,933		)
Goodwill balance, net	11,610		—		—			15,333			—			26,943
Activity during the year 2012:
Goodwill impairment recognized	—		—		—			—			—			—
Balance at December 31, 2012:
Goodwill	11,610		—		43,009			46,396			5,861			106,876
Accumulated impairment losses	—		—		(43,009		)	(31,063		)	(5,861		)	(79,933		)
Goodwill balance, net	11,610		—		—			15,333			—			26,943
Activity during the year 2013:
Goodwill impairment recognized	—		—		—			—			—			—
Acquisition goodwill recognized	18,686		20,642		—			—			—			39,328
Balance at December 31, 2013:
Goodwill	30,296		20,642		43,009			46,396			5,861			146,204
Accumulated impairment losses	—		—		(43,009		)	(31,063		)	(5,861		)	(79,933		)
Goodwill balance, net	$	30,296	$	20,642	$	—		$	15,333		$	—		$	66,271