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Business Acquisitions and Investments (Details) $ in Millions	1 Months Ended	6 Months Ended	12 Months Ended
	Jan. 31, 2018 USD ($)	Jun. 30, 2018 USD ($) Installment	Dec. 31, 2017 USD ($)	Mar. 31, 2018 USD ($)	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 Combination, Description [Abstract]
Percentage of equity interest acquired		65.00%		15.00%	15.00%		50.00%
Equity in joint ventures				$ 4.2	¥ 26,475,583		$ 14.0
Purchase price		$ 2.8
Number of cash installments | Installment		6
Foshan Guangdong Automotive Air Conditioning Co., Ltd [Member]
Business Combination, Description [Abstract]
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.

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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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