Business Segment, Geographic and Major Customer Information - Reportable Segments (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2016	Mar. 31, 2015	Dec. 31, 2015
Summarized financial information regarding reportable segments
Net revenue from external customers	$ 72,289	$ 82,373
Gross profit	24,929	26,527
Income (loss) from operations	(46,013)	(1,289)
Depreciation and amortization	4,289	4,570
Total assets	364,582	415,007	$ 403,090
Capital expenditures	4,213	5,590
Operating Segments [Member] \| Energy Chemistry Technologies [Member]
Summarized financial information regarding reportable segments
Net revenue from external customers	44,679	46,643
Gross profit	18,769	16,100
Income (loss) from operations	8,013	6,821
Depreciation and amortization	1,244	1,204
Total assets	149,006	152,423
Capital expenditures	3,014	2,361
Operating Segments [Member] \| Consumer and Industrial Chemistry Technologies [Member]
Summarized financial information regarding reportable segments
Net revenue from external customers	19,133	13,463
Gross profit	5,025	3,706
Income (loss) from operations	3,389	2,381
Depreciation and amortization	510	552
Total assets	110,344	92,438
Capital expenditures	143	22
Operating Segments [Member] \| Drilling Technologies [Member]
Summarized financial information regarding reportable segments
Net revenue from external customers	6,456	18,694
Gross profit	1,025	5,991
Income (loss) from operations	(40,951)	(637)
Depreciation and amortization	1,821	2,319
Total assets	68,284	141,229
Capital expenditures	238	2,124
Operating Segments [Member] \| Production Technologies [Member]
Summarized financial information regarding reportable segments
Net revenue from external customers	2,021	3,573
Gross profit	110	730
Income (loss) from operations	(5,430)	(539)
Depreciation and amortization	218	125
Total assets	23,682	25,176
Capital expenditures	185	638
Corporate and Other [Member]
Summarized financial information regarding reportable segments
Net revenue from external customers	0	0
Gross profit	0	0
Income (loss) from operations	(11,034)	(9,315)
Depreciation and amortization	496	370
Total assets	13,266	3,741
Capital expenditures	$ 633	$ 445

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 944
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-03(a)(12))
-URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section 45
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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
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-Section S99
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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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