GOODWILL AND INDEFINITE-LIVED INTANGIBLES (Detail) $ in Thousands	9 Months Ended
Sep. 30, 2017 USD ($)
Balance, December 31, 2016	$ 20,125
Currency translation adjustments	612
Balance, September 30, 2017	20,737
Power and Electro - Mechanical Segment
Balance, December 31, 2016	13,083
Currency translation adjustments	9
Balance, September 30, 2017	13,092
Energy Segment
Balance, December 31, 2016	7,042
Currency translation adjustments	603
Balance, September 30, 2017	7,645
Other Segment
Balance, December 31, 2016	0
Currency translation adjustments	0
Balance, September 30, 2017	$ 0

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975

Name:	us-gaap_Goodwill
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant