Goodwill (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Goodwill [Line Items]
GOODWILL	$ 179,044	$ 178,159	$ 164,464
Goodwill, Acquired During Period	885	13,695
Reservoir Description Segment [Member]
Goodwill [Line Items]
GOODWILL	96,639	95,754	82,059
Goodwill, Acquired During Period	885	13,695
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