Inventories - Schedule of Inventories (Detail) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014
Components Of Inventory [Line Items]
Finished Goods	$ 24,383	$ 28,218
Work-in- Process	2,042	2,763
Raw Materials	26,812	25,605
Total	53,237	56,586
Chemical Products [Member]
Components Of Inventory [Line Items]
Finished Goods	16,621	19,354
Raw Materials	5,427	2,147
Total	22,048	21,501
Climate Control Products [Member]
Components Of Inventory [Line Items]
Finished Goods	5,354	5,521
Work-in- Process	2,042	2,763
Raw Materials	21,385	23,458
Total	28,781	31,742
Industrial Machinery and Components [Member]
Components Of Inventory [Line Items]
Finished Goods	2,408	3,343
Total	$ 2,408	$ 3,343

Carrying amount, net of reserves and adjustments, as of the balance sheet date of merchandise or goods which are partially completed. This inventory is generally comprised of raw materials, labor and factory overhead costs, which require further materials, labor and overhead to be converted into finished goods, and which generally require the use of estimates to determine percentage complete and pricing.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.6(a)(3))
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 330
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB TOPIC 5.BB)
-URI http://asc.fasb.org/extlink&oid=27011343&loc=d3e100047-122729

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 5
-Section BB

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant