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Related Party Transactions (Details)			1 Months Ended							12 Months Ended
Related Party Transactions (Details)	Dec. 25, 2020 USD ($)	Nov. 02, 2017 USD ($)	Oct. 31, 2021 USD ($) item	Sep. 30, 2021 USD ($) item	Jul. 31, 2021 USD ($)	Mar. 31, 2020 USD ($)	May 31, 2019 USD ($)	Nov. 30, 2017 USD ($)	Jul. 31, 2017 USD ($) installment	Dec. 31, 2021 USD ($) ft²	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Mar. 11, 2019	Mar. 10, 2019
Related Party Transaction [Line Items]
Proceeds from sale of previously consolidated subsidiary shares												$ 366,000
Equity method investments										$ 10,166,000	$ 6,376,000
Area of leased property (in square feet) \| ft²										19,467
Beijing BoYu Semiconductor Vessel Craftwork Technology Co., Ltd Investment
Related Party Transaction [Line Items]
Additional Minority Ownership Percentage by Parent											4
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Changes, Purchase of Interest by Parent											$ 1,600,000
Percentage of Equity Interests Sold											6.00%
Beijing JiYa Semiconductor Material Co., Ltd Investment
Related Party Transaction [Line Items]
Percentage of ownership, consolidated method (in hundredths)													39.00%	46.00%
Other Assets [Member]
Related Party Transaction [Line Items]
Equity method investments										$ 10,200,000	$ 6,400,000
Equity investment entity \| Raw materials sales to related party \| Accounts receivable \| Beijing BoYu Semiconductor Vessel Craftwork Technology Co
Related Party Transaction [Line Items]
Amounts receivable from related party										0	0
Equity investment entity \| ChaoYang XinMei
Related Party Transaction [Line Items]
Equity method investments										$ 1,400,000
Ownership (as a percent)										58.50%
Donghai County Dongfang High Purity Electronic Materials Co., Ltd \| Raw materials purchases from related party \| Accounts payable \| Beijing Tongmei Xtal Technology
Related Party Transaction [Line Items]
Amount payable to related party										$ 112,000	0
Emei Shan Jiamei Materials Co., Ltd \| Raw materials purchases from related party \| Accounts payable \| Beijing Tongmei Xtal Technology
Related Party Transaction [Line Items]
Amount payable to related party										0	0
Xilingol Tongli Germanium Co. Ltd \| Raw materials purchases from related party \| Accounts payable
Related Party Transaction [Line Items]
Amount payable to related party										0	0
Beijing BoYu Semiconductor Vessel Craftwork Technology Co \| Related party loan
Related Party Transaction [Line Items]
Revenue from related parties										$ 50,000	300,000
Beijing BoYu Semiconductor Vessel Craftwork Technology Co \| Lease of land \| Beijing Tongmei Xtal Technology
Related Party Transaction [Line Items]
Area of leased property (in square feet) \| ft²										22,081
Lease term										10 years
Annual lease payment										$ 24,000
Rental increase period										3 years
Interest rate (as a percent)										5.00%
Nanjing JinMei Gallium Co., Ltd \| Related party loan \| Beijing Tongmei Xtal Technology
Related Party Transaction [Line Items]
Number of installments \| installment									3
Related party notes receivable - long term									$ 768,000
Amount payable to related party										$ 0	303,000
Interest rate (as a percent)									4.90%
Repayment of related party notes receivable					$ 858,000
Executive officer \| Related party loan \| Beijing BoYu Semiconductor Vessel Craftwork Technology Co
Related Party Transaction [Line Items]
Amount of transaction						$ 141,000	$ 146,000	$ 291,000
Interest rate (as a percent)						2.75%	2.75%	2.75%
Repayment of related party notes receivable	$ 612,000
Proceeds from Collection of Interest from Long Term Loans to Related Parties	$ 35,000
Executive officer \| Related party loan \| Other Assets [Member] \| Beijing BoYu Semiconductor Vessel Craftwork Technology Co
Related Party Transaction [Line Items]
Related party notes receivable - current										0	$ 0
3rd Party Investor \| Beijing BoYu Semiconductor Vessel Craftwork Technology Co., Ltd Investment
Related Party Transaction [Line Items]
Raised additional capital		$ 2,000,000
Percentage ownership from issuance of shares		10.00%
Additional Minority Ownership Percentage by Parent											4
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Changes, Purchase of Interest by Parent											$ 1,600,000
3rd Party Investor \| Beijing BoYu Semiconductor Vessel Craftwork Technology Co
Related Party Transaction [Line Items]
Raised additional capital		$ 2,000,000
Percentage ownership from issuance of shares		10.00%
ChaoYang Xinshuo \| Loan from related party \| ChaoYang XinMei High Purity Semiconductor Materials Co., Ltd
Related Party Transaction [Line Items]
Amount of transaction			$ 1,000,000.0	$ 900,000
Interest rate (as a percent)			6.50%	6.50%
Short-term loan from noncontrolling interest										$ 1,900,000
Loan received from number of minority investors \| item			1	1
Number of minority investors \| item			2	2