Loans and Line of Credit - Schedule of Bank Loans (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Mar. 31, 2024	Dec. 31, 2023
Bank Loans and Line of Credit
Loan Balance		$ 48,217	$ 52,921
Beijing Tongmei Xtal Technology | Bank of China | Bank Loan with 3.5 Percent, January 2024 Due Date One
Bank Loans and Line of Credit
Loan Detail			$ 1,848
Interest Rate			3.50%
Loan Balance			$ 1,795
Beijing Tongmei Xtal Technology | Bank of China | Bank Loan with 2.8 Percent, March 2024 Due Date One
Bank Loans and Line of Credit
Loan Detail			$ 2,184
Interest Rate			2.80%
Loan Balance			$ 2,118
Beijing Tongmei Xtal Technology | Bank of China | Bank Loan with 2.7 Percent, September 2024 Due Date
Bank Loans and Line of Credit
Loan Detail		376
Interest Rate			2.70%
Loan Balance		378	$ 386
Beijing Tongmei Xtal Technology | Bank of China | Bank Loan with 3.5 Percent, November 2024 Due Date One
Bank Loans and Line of Credit
Loan Detail		$ 876
Interest Rate		3.50%
Loan Balance		$ 858	876
Beijing Tongmei Xtal Technology | Bank of China | Bank Loan with 3.5 Percent, January 2024 Due Date Two
Bank Loans and Line of Credit
Loan Detail		$ 2,911
Interest Rate		3.50%
Loan Balance			2,825
Beijing Tongmei Xtal Technology | Bank of China | Bank Loan with 3.0 Percent, January 2025 Due Date
Bank Loans and Line of Credit
Loan Detail		$ 2,770
Interest Rate		3.00%
Loan Balance		$ 2,770
Beijing Tongmei Xtal Technology | Bank of China | Bank Loan with 3.5 Percent, November 2024 Due Date Two
Bank Loans and Line of Credit
Loan Detail		$ 1,003
Interest Rate		3.50%
Loan Balance		$ 985	1,003
Beijing Tongmei Xtal Technology | Bank of Communications | Bank Loan with 3.3 Percent, January 2024 Due Date Two
Bank Loans and Line of Credit
Loan Detail		1,455	$ 1,455
Interest Rate			3.30%
Loan Balance			$ 1,414
Beijing Tongmei Xtal Technology | Bank of Communications | Bank Loan with 3.8 Percent, May 2024 Due Date
Bank Loans and Line of Credit
Loan Detail		$ 1,380
Interest Rate		3.80%
Loan Balance		$ 1,386	1,414
Beijing Tongmei Xtal Technology | Bank of Communications | Bank Loan with 3.8 Percent, May 2024 Due Date One
Bank Loans and Line of Credit
Loan Detail		$ 1,373
Interest Rate		3.80%
Loan Balance		$ 1,386	1,414
Beijing Tongmei Xtal Technology | Bank of Communications | Bank Loan with 3.0 Percent, May 2024 Due Date
Bank Loans and Line of Credit
Loan Detail		$ 1,414
Interest Rate		3.00%
Loan Balance		$ 1,386	1,414
Beijing Tongmei Xtal Technology | China Merchants Bank | Bank Loan with 3.5 Percent, January 2025 Due Date
Bank Loans and Line of Credit
Loan Detail		$ 1,386
Interest Rate		3.50%
Loan Balance		$ 1,386
Beijing Tongmei Xtal Technology | China Merchants Bank | Bank Loan with 3.5 Percent, February 2025 Due Date
Bank Loans and Line of Credit
Loan Detail		$ 692
Interest Rate		3.50%
Loan Balance		$ 692
Beijing Tongmei Xtal Technology | China Merchants Bank | Bank Loan with 3.7 Percent, January 2024 Due Date
Bank Loans and Line of Credit
Loan Detail		$ 4,367
Interest Rate		3.70%
Loan Balance			4,235
Beijing Tongmei Xtal Technology | Bank of Beijing | Bank Loan with 4.2 Percent One, January 2024 Due Date
Bank Loans and Line of Credit
Loan Detail			$ 2,290
Interest Rate			4.20%
Loan Balance			$ 2,220
Beijing Tongmei Xtal Technology | Bank of Beijing | Bank Loan with 3.2 Percent, May 2024 Due Date
Bank Loans and Line of Credit
Loan Detail		$ 3,541
Interest Rate		3.20%
Loan Balance		$ 3,560	3,626
Beijing Tongmei Xtal Technology | Bank of Beijing | Bank Loan with 3.2 Percent, February 2024 Due Date
Bank Loans and Line of Credit
Loan Detail		$ 1,380
Interest Rate		3.20%
Loan Balance			1,414
Beijing Tongmei Xtal Technology | Bank of Beijing | Bank Loan with 3.0 Percent, December 2024 Due Date
Bank Loans and Line of Credit
Loan Detail		$ 1,414
Interest Rate		3.00%
Loan Balance		$ 1,386	1,414
Beijing Tongmei Xtal Technology | Bank of Beijing | Bank Loan with 3.0 Percent, December 2024 Due Date Two
Bank Loans and Line of Credit
Loan Detail		$ 1,386
Interest Rate		3.00%
Loan Balance		$ 1,386
Beijing Tongmei Xtal Technology | Bank of Beijing | Bank Loan with 3.0 Percent, February 2025 Due Date
Bank Loans and Line of Credit
Loan Detail		$ 3,600
Interest Rate		3.00%
Loan Balance		$ 3,600
Beijing Tongmei Xtal Technology | Industrial Bank | Bank Loan with 4.3 Percent, June 2024 Due Date
Bank Loans and Line of Credit
Loan Detail			$ 2,757
Interest Rate			4.30%
Loan Balance		2,770	$ 2,825
Beijing Tongmei Xtal Technology | Industrial Bank | Bank Loan with 4.3 Percent, July 2024 Due Date
Bank Loans and Line of Credit
Loan Detail		$ 2,744	$ 2,744
Interest Rate		4.30%	4.30%
Loan Balance		$ 2,770	$ 2,825
Beijing Tongmei Xtal Technology | Industrial Bank | Bank Loan with 4.3 Percent, September 2024 Due Date
Bank Loans and Line of Credit
Loan Detail		$ 2,744
Interest Rate		4.30%
Loan Balance		$ 2,770	2,825
Beijing Tongmei Xtal Technology | NingBo Bank | Bank Loan with 4.2 Percent, September 2024 Due Date
Bank Loans and Line of Credit
Loan Detail		$ 2,744
Interest Rate		4.20%
Loan Balance		$ 2,765	2,820
Beijing Tongmei Xtal Technology | NingBo Bank | Bank Loan with 4.3 Percent, November 2024 Due Date
Bank Loans and Line of Credit
Loan Detail		$ 1,271
Interest Rate		4.30%
Loan Balance		$ 1,246	1,271
Beijing Tongmei Xtal Technology | NingBo Bank | Bank Loan with 4.3 Percent, December 2024 Due Date
Bank Loans and Line of Credit
Loan Detail		$ 2,825	$ 2,825
Interest Rate		4.30%	4.30%
Loan Balance		$ 2,770	$ 2,825
Beijing Tongmei Xtal Technology | NingBo Bank | Bank Loan with 4.3 Percent, January 2025 Due Date
Bank Loans and Line of Credit
Loan Detail		$ 1,647
Interest Rate		4.30%
Loan Balance		$ 1,647
Beijing Tongmei Xtal Technology | Industrial and Commercial Bank of China | Bank Loan with 3.3 Percent, September 2024 Due Date
Bank Loans and Line of Credit
Loan Detail		$ 2,744	$ 2,744
Interest Rate		3.30%	3.30%
Loan Balance		$ 2,770	$ 2,825
Beijing Tongmei Xtal Technology | NanJing Bank | Bank Loan with 3.5 Percent, January 2025 Due Date
Bank Loans and Line of Credit
Loan Detail		$ 1,386
Interest Rate		3.50%
Loan Balance		$ 1,386
Beijing Tongmei Xtal Technology | NanJing Bank | Bank Loan with 3.8 Percent, October 2024 Due Date
Bank Loans and Line of Credit
Loan Detail		$ 2,752
Interest Rate		3.80%
Loan Balance		$ 2,700	2,752
Beijing BoYu Semiconductor Vessel Craftwork Technology Co | Bank of China | Bank Loan with 2.4 Percent, January 2024 Due Date
Bank Loans and Line of Credit
Loan Detail		$ 1,204
Interest Rate		2.40%
Loan Balance			849
Beijing BoYu Semiconductor Vessel Craftwork Technology Co | Industrial Bank
Bank Loans and Line of Credit
Guarantee fee (as a percent)	0.70%
Beijing BoYu Semiconductor Vessel Craftwork Technology Co | Industrial Bank | Bank Loan With 3.6 Percent September 2024 Due Date
Bank Loans and Line of Credit
Loan Detail		$ 688
Interest Rate		3.60%
Loan Balance		$ 692	708
Beijing BoYu Semiconductor Vessel Craftwork Technology Co | NingBo Bank | Bank Loan with 3.3 Percent, May 2024 Due Date
Bank Loans and Line of Credit
Loan Detail			1,414
Interest Rate		3.30%
Loan Balance		$ 1,386	1,414
Beijing BoYu Semiconductor Vessel Craftwork Technology Co | Industrial and Commercial Bank of China | Bank Loan with 2.7 Percent, December 2024 Due Date
Bank Loans and Line of Credit
Loan Detail		$ 1,414	$ 1,414
Interest Rate		2.70%	2.70%
Loan Balance		$ 1,386	$ 1,414