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Amount for accounts payable to related parties. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

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Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.

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Area of a real estate property.

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Term of the lessor's leasing arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Amounts due from parties associated with the reporting entity as evidenced by a written promise to pay, due after 1 year (or 1 business cycle).

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Amount of transactions with related party during the financial reporting period.

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Identify the stated interest rate per the agreement, for example, leasing and debt arrangements between related parties.

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Related Party Transactions (Details)	1 Months Ended			3 Months Ended		9 Months Ended
Related Party Transactions (Details)	Apr. 30, 2016 USD ($)	Apr. 30, 2014 USD ($)	Aug. 31, 2011 USD ($) item	Sep. 30, 2016 USD ($) ft² installment	Sep. 30, 2015 USD ($)	Sep. 30, 2016 USD ($) ft² installment	Sep. 30, 2015 USD ($)	Dec. 31, 2015 USD ($)
Related Party Transaction [Line Items]
Related party notes receivable - long term				$ 1,735,000		$ 1,735,000		$ 1,781,000
Accounts payable				7,277,000		7,277,000		6,460,000
Accounts receivable				$ 18,380,000		$ 18,380,000		18,468,000
Area of leased property (in square feet) \| ft²				19,467		19,467
Equity investment entity \| Related party loan \| Beijing JiYa Semiconductor Material Co., Ltd
Related Party Transaction [Line Items]
Amount of transaction			$ 1,600,000
Number of equity method investees to whom loan was granted \| item			1
Term of loan						2 years 10 months
Number of installments \| installment				3		3
Related party notes receivable - long term				$ 1,600,000		$ 1,600,000		1,600,000
Equity investment entity \| Raw materials purchases from related party \| Accounts payable \| Beijing JiYa Semiconductor Material Co., Ltd
Related Party Transaction [Line Items]
Amount payable to related party				2,400,000		2,400,000		2,400,000
Equity investment entity \| Raw materials sales to related party \| Accounts receivable \| Beijing JiYa Semiconductor Material Co., Ltd
Related Party Transaction [Line Items]
Amounts receivable from related party				370,000		370,000		473,000
Equity investment entity \| Raw material agency sales agreement \| Other income (expense), net \| Nanjing Jin Mei Gallium Co., Ltd
Related Party Transaction [Line Items]
Other income from related party				0	$ 0	$ 1,000	$ 1,000
Donghai County Dongfang High Purity Electronic Materials Co., Ltd \| Related party loan \| Beijing Tongmei Xtal Technology
Related Party Transaction [Line Items]
Amount of transaction		$ 45,000
Interest rate (as a percent)						6.15%
Related party notes receivable - long term				52,000		$ 52,000
Donghai County Dongfang High Purity Electronic Materials Co., Ltd \| Raw materials purchases from related party \| Beijing Tongmei Xtal Technology
Related Party Transaction [Line Items]
Related party notes receivable - long term				111,000		111,000		114,000
Emei shan Jiamei Materials Co., Ltd \| Raw materials purchases from related party \| Beijing Tongmei Xtal Technology
Related Party Transaction [Line Items]
Amount payable to related party				256,000		256,000		70,000
Xilingol Tongli Germanium Co. Ltd \| Raw materials purchases from related party \| Accounts payable \| Beijing Tongmei Xtal Technology
Related Party Transaction [Line Items]
Amount payable to related party				477,000		477,000		0
Beijing Kaide Quartz Co. Ltd \| Raw materials purchases from related party \| Accounts payable
Related Party Transaction [Line Items]
Amount payable to related party				$ 457,000		$ 457,000		$ 379,000
Beijing BoYu Semiconductor Vessel Craftwork Technology Co \| Lease of land \| Beijing Tongmei Xtal Technology
Related Party Transaction [Line Items]
Lease term						10 years
Rental increase period						3 years
Area of leased property (in square feet) \| ft²				22,081		22,081
Annual lease payment						$ 24,000
Increase in annual lease payment at each third year anniversary (in hundredths)				5.00%		5.00%
Executive officer \| Related party loan \| Beijing BoYu Semiconductor Vessel Craftwork Technology Co
Related Party Transaction [Line Items]
Amount of transaction	$ 180,000
Interest rate (as a percent)	2.75%