Amount of assets pledged to secure a debt instrument.

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Face (par) amount of debt instrument at time of issuance.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amount of unused borrowing capacity under the long-term financing arrangement that is available to the entity as of the balance sheet date.

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Amount of the cost of borrowed funds accounted for as interest expense for debt.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the remainder of the fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Weighted average interest rate of long-term debt outstanding calculated over time.

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Long-term Bank Loan (Details) ¥ in Thousands, $ in Thousands		3 Months Ended	6 Months Ended
	Apr. 04, 2018 CNY (¥)	Jun. 30, 2018 USD ($)	Jun. 30, 2018 USD ($)	Apr. 04, 2018 USD ($)	Sep. 02, 2015 USD ($)
Long-term bank loan
Unused long-term credit availability		$ 45,337	$ 45,337
Interest expense		421	752
Long-term Bank Loan, September 2, 2015 \| Loans Payable
Long-term bank loan
Face amount					$ 18,134
Fixed annual interest rate (as a percent)					7.00%
Long-term debt		18,134	18,134
Loan security		19,585	19,585
Loan amount repayable on September 30, 2018		9,067	9,067
Loan amount repayable on September 30, 2019		9,067	9,067
Long Term Bank Loan April 4, 2018 \| Loans Payable
Long-term bank loan
Face amount	¥ 580,000			$ 87,652
Long-term debt		$ 42,315	$ 42,315
Interest rate (as a percent)			4.90%
Loan security				$ 12,132
Debt instrument term (in years)	9 years