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Business Acquisitions and Investments (Details) $ in Millions	1 Months Ended		12 Months Ended
	Mar. 31, 2018 USD ($) Installment	Jan. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Mar. 31, 2018 CNY (¥)	Nov. 30, 2017 USD ($)	Apr. 30, 2014 USD ($)
Foshan GWO YNG SMP Vehicle Climate Control & Cooling Products Co. Ltd. [Member]
Business Acquisition [Line Items]
Percentage of equity interest acquired	15.00%			15.00%		50.00%
Equity in joint ventures	$ 4.2			¥ 26,475,583		$ 14.0
Purchase price	$ 0.7
Increase in percentage of equity interest	65.00%			65.00%
Number of cash installments | Installment	6
Foshan Guangdong Automotive Air Conditioning Co., Ltd [Member]
Business Acquisition [Line Items]
Percentage of equity interest acquired					50.00%
Equity in joint ventures					$ 12.5
Purchase price		$ 5.7	$ 6.8

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 50
-Paragraph 3
-Subparagraph (a)(1)
-URI http://asc.fasb.org/extlink&oid=66011266&loc=d3e33918-111571

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+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 323
-SubTopic 10
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=66022249&loc=d3e33749-111570

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02.12)
-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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The cash outflow associated with the acquisition of business during the period. The cash portion only of the acquisition price.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
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