Deferred Income (Details)	1 Months Ended		3 Months Ended
	Jan. 31, 2015 USD ($)	Jan. 31, 2015 CNY (¥)	Mar. 31, 2019 USD ($)	Mar. 31, 2019 CNY (¥)	Mar. 31, 2019 CNY (¥)
Fund Support Agreement With Shunqing Government [Member]
Deferred Revenue Arrangement [Line Items]
Government grant, agreement amount | $	$ 52,000,000		$ 2,400,000
Government grant related to construction in the form of repayment of bank loan on behalf of the Company by the government | $			5,300,000
Government grant related to the construction of Sichuan plant in the form of restricted cash | $
Government grant, funds received till date | $			49,300,000
Additional government grant received | $			11,900,000
Additional government grant received recognized as other income | $			1,300,000
Fund Support Agreement With Shunqing Government [Member] | China, Yuan Renminbi [Member]
Deferred Revenue Arrangement [Line Items]
Government grant, agreement amount | ¥		¥ 350,000,000		¥ 16,400,000
Government grant related to construction in the form of repayment of bank loan on behalf of the Company by the government | ¥				36,000,000
Government grant related to the construction of Sichuan plant in the form of restricted cash | ¥
Government grant, funds received till date | ¥					¥ 332,200,000
Additional government grant received | ¥				80,200,000
Additional government grant received recognized as other income | ¥				¥ 8,700,000
Ministry of Finance of the People's Republic of China [Member]
Deferred Revenue Arrangement [Line Items]
Government grant, funds received till date | $			1,000,000
Ministry of Finance of the People's Republic of China [Member] | China, Yuan Renminbi [Member]
Deferred Revenue Arrangement [Line Items]
Government grant, funds received till date | ¥					6,400,000
Ministry of Science and Technology [Member]
Deferred Revenue Arrangement [Line Items]
Government grant, funds received till date | $			300,000
Ministry of Science and Technology [Member] | China, Yuan Renminbi [Member]
Deferred Revenue Arrangement [Line Items]
Government grant, funds received till date | ¥					2,200,000
Harbin Bureau of Finance for Biomedical [Member]
Deferred Revenue Arrangement [Line Items]
Government grant, funds received till date | $			$ 6,700,000
Harbin Bureau of Finance for Biomedical [Member] | China, Yuan Renminbi [Member]
Deferred Revenue Arrangement [Line Items]
Government grant, funds received till date | ¥					¥ 45,000,000