Investments and Fair Value Measurements - Investment Category and Length (Details)	1 Months Ended	3 Months Ended			12 Months Ended
	May 31, 2023 USD ($)	Mar. 31, 2024 USD ($) company	Jun. 30, 2023 USD ($)	Mar. 31, 2023 USD ($)	Dec. 31, 2023 USD ($) company	Jan. 30, 2024 USD ($)
Summary of fair value and gross unrealized losses related to available-for-sale securities [Abstract]
Fair value, in loss position greater than twelve months		$ 1,667,000			$ 2,140,000
Gross unrealized (loss), in loss position greater than twelve months		(13,000)			(20,000)
Fair value, total in loss position		1,667,000			2,140,000
Gross unrealized (loss), total in loss position		(13,000)			(20,000)
Restricted Cash
Maximum borrowing capacity						$ 9,700,000
Proceeds from short-term bank loans		12,858,000		$ 18,372,000
Restricted cash		13,807,000			12,362,000
Minority Investments
Investments, equity method		$ 13,198,000			$ 12,476,000
Number of equity method investments | company		3			3
Investments, cost method		$ 551,000			$ 551,000
Emeishan Jia Mei High Purity Metals Co., Ltd Investment
Minority Investments
Ownership (as a percent)	25.00%	10.00%
Proceeds from sale of equity method investments	$ 827,000
Investments, cost method		$ 551,000			551,000
Equity ownership percentage	10.00%	10.00%
Loss on sale of equity investment	$ 575,000	$ 575,000
Realized gain on adjustment of fair value of investment		383,000
Beijing JiYa Semiconductor Material Co., Ltd Investment
Minority Investments
Investments, equity method		4,105,000			3,806,000
Impairment charge on equity investee			$ 754,000
Equity investment carrying value of asset after write down		$ 0
Ownership (as a percent)		39.00%
Investments Excluding Beijing JiYa Semiconductor Material Co., Ltd.
Minority Investments
Impairment charge on equity investee		$ 0		$ 0
Certificates of deposit.
Summary of fair value and gross unrealized losses related to available-for-sale securities [Abstract]
Fair value, in loss position greater than twelve months		1,667,000			2,140,000
Gross unrealized (loss), in loss position greater than twelve months		(13,000)			(20,000)
Fair value, total in loss position		1,667,000			2,140,000
Gross unrealized (loss), total in loss position		(13,000)			(20,000)
Other assets
Minority Investments
Investments, equity method		13,200,000			$ 12,500,000
Other noncurrent assets | Emeishan Jia Mei High Purity Metals Co., Ltd Investment
Minority Investments
Investments, cost method		$ 551,000