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Borrowing Arrangements - Schedule of Outstanding Borrowings (Detail) ¥ in Thousands	Dec. 31, 2017 USD ($)	Dec. 31, 2017 CNY (¥)	Dec. 31, 2016 USD ($)
Debt Instrument [Line Items]
Capital leases	$ 1,773,000		$ 2,161,000
Outstanding borrowings	66,153,000		52,214,000
Debt – current portion	(19,335,000)		(26,825,000)
Long-term debt	46,818,000		25,389,000
Revolving Credit and Security Agreement [Member]
Debt Instrument [Line Items]
Long term debt	20,349,000		0
Credit Facility [Member]
Debt Instrument [Line Items]
Long term debt	0		7,146,000
Industrial Revenue Bonds [Member]
Debt Instrument [Line Items]
Long term debt	13,311,000		13,311,000
Promissory Notes (and Interest) [Member]
Debt Instrument [Line Items]
Long term debt	25,395,000		23,844,000
Minority Shareholder Loan [Member]
Debt Instrument [Line Items]
Long term debt	5,325,000	¥ 34,655	4,990,000
Term Loan [Member]
Debt Instrument [Line Items]
Long term debt	$ 0		$ 762,000