Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Goodwill [Line Items]
GOODWILL	$ 178,159	$ 164,464	$ 163,337
Goodwill, Acquired During Period	13,695	1,127
Reservoir Description Segment [Member]
Goodwill [Line Items]
GOODWILL	95,754	82,059	80,932
Goodwill, Acquired During Period	13,695	1,127
Production Enhancement Segment [Member]
Goodwill [Line Items]
GOODWILL	79,560	79,560	79,560
Goodwill, Acquired During Period	0	0
Reservoir Management Segment [Member]
Goodwill [Line Items]
GOODWILL	2,845	2,845	$ 2,845
Goodwill, Acquired During Period	$ 0	$ 0