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Related Party Transactions (Details) - USD ($)	1 Months Ended										3 Months Ended	12 Months Ended
Related Party Transactions (Details) - USD ($)	Jan. 31, 2023	Sep. 30, 2022	Jul. 31, 2022	May 31, 2022	Apr. 30, 2022	Jan. 31, 2022	Dec. 31, 2021	Oct. 31, 2021	Sep. 30, 2021	Jan. 31, 2021	Dec. 31, 2020	Dec. 31, 2020	Sep. 30, 2024	May 31, 2021	Feb. 28, 2021
Beijing Tongmei Xtal Technology
Related Party Transactions
Increase in redeemable noncontrolling interests										$ 1,500,000	$ 48,100,000	$ 48,100,000
Loan from related party \| Chao Yang XinMei High Purity Semiconductor Materials Co. Ltd.
Related Party Transactions
Increase in redeemable noncontrolling interests				$ 100,000
Sale of subsidiary shares to noncontrolling interests					$ 4,500,000
Loan from related party \| Chao Yang XinMei High Purity Semiconductor Materials Co. Ltd. \| Beijing Tongmei Xtal Technology
Related Party Transactions
Increase in noncontrolling interest				1,400,000
ChaoYang XinMei
Related Party Transactions
Sale of subsidiary shares to noncontrolling interests					4,500,000
ChaoYang Xinshuo \| Loan from related party \| Chao Yang XinMei High Purity Semiconductor Materials Co. Ltd.
Related Party Transactions
Amount of transaction								$ 1,000,000.0	$ 900,000
Short-term loan from noncontrolling interest							$ 1,900,000
Sale of subsidiary shares to noncontrolling interests					1,900,000
Amount paid to subsidiary				600,000	700,000
Beijing Tongmei Xtal Technology \| Loan from related party \| Chao Yang XinMei High Purity Semiconductor Materials Co. Ltd.
Related Party Transactions
Amount of transaction						$ 1,400,000	$ 1,400,000
Short-term loan from noncontrolling interest						0
Increase in noncontrolling interest				1,400,000		2,200,000
Increase in redeemable noncontrolling interests						$ 200,000
Sale of subsidiary shares to noncontrolling interests					2,600,000
Amount paid to subsidiary				$ 800,000	$ 1,100,000
Chao Yang XinMei High Purity Semiconductor Materials Co. Ltd.
Related Party Transactions
Increase in noncontrolling interest			$ 610,000
Further investment			600,000
Redeemable noncontrolling interest increased			$ 57,000
Ownership (as a percent)			58.50%											58.50%	58.50%
Chao Yang XinMei High Purity Semiconductor Materials Co. Ltd. \| Beijing Tongmei Xtal Technology
Related Party Transactions
Further investment			$ 800,000
Chao Yang XinMei High Purity Semiconductor Materials Co. Ltd. \| ChaoYang KaiMei Quartz Co., Ltd
Related Party Transactions
Amount of transaction		$ 1,500,000
Proceeds from related party	$ 1,500,000
Chao Yang XinMei High Purity Semiconductor Materials Co. Ltd. \| Prepaid expenses and other current assets \| ChaoYang KaiMei Quartz Co., Ltd
Related Party Transactions
Other receivables													$ 0