Loans and Line of Credit - Schedule of Bank Loans (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Jun. 30, 2024
Bank Loans and Line of Credit
Loan Balance	$ 52,921	$ 49,899
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	$ 376
Interest rate	2.70%	2.70%
Loan Balance	$ 386	$ 376
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	$ 876
Interest rate	3.50%	3.50%
Loan Balance	$ 876	$ 855
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		$ 2,755
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	$ 1,003
Interest rate	3.50%	3.50%
Loan Balance	$ 1,003	$ 980
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
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	$ 1,414
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	$ 1,414
Beijing Tongmei Xtal Technology | Bank of Communications | Bank Loan with 3.0 Percent, May 2025 Due Date One
Bank Loans and Line of Credit
Loan Detail		$ 1,376
Interest rate		3.00%
Loan Balance		$ 1,376
Beijing Tongmei Xtal Technology | Bank of Communications | Bank Loan with 3.0 Percent, May 2025 Due Date Two
Bank Loans and Line of Credit
Loan Detail		$ 2,480
Interest rate		3.00%
Loan Balance		$ 2,480
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		$ 1,376
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		$ 690
Beijing Tongmei Xtal Technology | China Merchants Bank | Bank Loan with 3.5 Percent, April 2025 Due Date
Bank Loans and Line of Credit
Loan Detail		$ 692
Interest rate		3.50%
Loan Balance		$ 690
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	$ 3,626
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	$ 1,414
Interest rate	3.00%	3.00%
Loan Balance	$ 1,414	$ 1,376
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		$ 1,376
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		$ 3,577
Beijing Tongmei Xtal Technology | Bank of Beijing | Bank Loan with 3.0 Percent, June 2025 Due Date
Bank Loans and Line of Credit
Loan Detail		$ 3,580
Interest rate		3.00%
Loan Balance		$ 3,577
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	$ 2,825
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	$ 2,825	$ 2,752
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	$ 2,744
Interest rate	4.30%	4.30%
Loan Balance	$ 2,825	$ 2,752
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	$ 2,744
Interest rate	4.20%	4.20%
Loan Balance	$ 2,820	$ 2,746
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	$ 1,271
Interest rate	4.30%	4.30%
Loan Balance	$ 1,271	$ 1,238
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	$ 2,825	$ 2,752
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		$ 1,637
Beijing Tongmei Xtal Technology | NingBo Bank | Bank Loan with 4.3 Percent, March 2025 Due Date
Bank Loans and Line of Credit
Loan Detail		$ 1,258
Interest rate		4.30%
Loan Balance		$ 1,258
Beijing Tongmei Xtal Technology | China Citic Bank | Bank Loan with 3.0 Percent, June 2025 Due Date
Bank Loans and Line of Credit
Loan Detail		$ 2,752
Interest rate		3.00%
Loan Balance		$ 2,752
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	$ 2,825	$ 2,752
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		$ 1,376
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	$ 2,752
Interest rate	3.80%	3.80%
Loan Balance	$ 2,752	$ 2,683
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 | Bank of Communications | Bank Loan with 3.0 Percent, May 2025 Due Date One
Bank Loans and Line of Credit
Loan Detail		$ 275
Interest rate		3.00%
Loan Balance		$ 275
Beijing BoYu Semiconductor Vessel Craftwork Technology Co | 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	$ 1,414
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	$ 688
Interest rate	3.60%	3.60%
Loan Balance	$ 708	$ 690
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	$ 1,414
Beijing BoYu Semiconductor Vessel Craftwork Technology Co | NingBo Bank | Bank Loan with 3.0 Percent, November 2024 Due Date
Bank Loans and Line of Credit
Loan Detail		$ 1,376
Interest rate		3.00%
Loan Balance		$ 1,376
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	$ 1,414	$ 1,376