Loans and Line of Credit - Schedule of Bank Loans (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2025	Dec. 31, 2024
Bank Loans and Line of Credit
Loan Balance	$ 50,763	$ 45,963
Beijing Tongmei Xtal Technology | Bank of China | Bank Loan With 2.7 Percent, January 2026 Due Date
Bank Loans and Line of Credit
Loan Detail		$ 689
Interest rate		2.70%
Loan Balance	689
Beijing Tongmei Xtal Technology | Bank of China | Bank Loan with 2.7 Percent, March 2026 Due Date
Bank Loans and Line of Credit
Loan Detail		$ 579
Interest rate		2.70%
Loan Balance	579
Beijing Tongmei Xtal Technology | Bank of China | Bank Loan with 2.4 Percent, September 2025 Due Date
Bank Loans and Line of Credit
Loan Detail	$ 1,426
Interest rate	2.40%
Loan Balance	$ 1,380	$ 1,370
Beijing Tongmei Xtal Technology | Bank of China | Bank Loan with 2.4 Percent, November 2025 Due Date
Bank Loans and Line of Credit
Loan Detail	$ 1,370
Interest rate	2.40%
Loan Balance	$ 1,380	1,370
Beijing Tongmei Xtal Technology | Bank of China | Bank Loan With 2.7 Percent, November 2025 Due Date
Bank Loans and Line of Credit
Loan Detail	$ 685
Interest rate	2.70%
Loan Balance	$ 689	685
Beijing Tongmei Xtal Technology | Bank of China | Bank Loan with 2.5 Percent, February 2026 Due Date
Bank Loans and Line of Credit
Loan Detail	$ 2,480
Interest rate	2.50%
Loan Balance	$ 2,480
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	$ 1,380	1,370
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	2,466
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		1,370
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		685
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		685
Beijing Tongmei Xtal Technology | China Merchants Bank | Bank Loan with 2.9 Percent, January 2026 Due Date
Bank Loans and Line of Credit
Loan Detail	$ 3,155
Interest rate	2.90%
Loan Balance	$ 3,155
Beijing Tongmei Xtal Technology | China Merchants Bank | Bank Loan With 2.9 Percent, March 2026 Due Date
Bank Loans and Line of Credit
Loan Detail	$ 978
Interest rate	2.90%
Loan Balance	$ 978
Beijing Tongmei Xtal Technology | Bank of Beijing | Bank Loan with 2.7 Percent, March 2026 Due Date
Bank Loans and Line of Credit
Loan Detail	$ 2,204
Interest rate	2.70%
Loan Balance	$ 2,204
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		3,565
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	$ 3,585	3,565
Beijing Tongmei Xtal Technology | Industrial Bank
Bank Loans and Line of Credit
Guarantee fee (as a percent)	1.00%
Beijing Tongmei Xtal Technology | Industrial Bank | Bank Loan with 3.9 Percent, September 2025 Due Date
Bank Loans and Line of Credit
Loan Detail	$ 2,851
Interest rate	3.90%
Loan Balance	$ 2,800	2,740
Beijing Tongmei Xtal Technology | Industrial Bank | Bank Loan With 3.9 Percent, October 2025 Due Date
Bank Loans and Line of Credit
Loan Detail	$ 2,679
Interest rate	3.90%
Loan Balance	$ 2,689	2,679
Beijing Tongmei Xtal Technology | Industrial Bank | Bank Loan With 3.2 Percent, November 2025 Due Date
Bank Loans and Line of Credit
Loan Detail	$ 1,440
Interest rate	3.20%
Loan Balance	$ 1,447	1,440
Beijing Tongmei Xtal Technology | Industrial Bank | Bank Loan with 3.8 Percent, March 2026 Due Date
Bank Loans and Line of Credit
Loan Detail	$ 1,380
Interest rate	3.80%
Loan Balance	$ 1,380
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		1,630
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		1,255
Beijing Tongmei Xtal Technology | NingBo Bank | Bank Loan With 3.9 Percent, November 2025 Due Date
Bank Loans and Line of Credit
Loan Detail	$ 1,822
Interest rate	3.90%
Loan Balance	$ 1,832	1,822
Beijing Tongmei Xtal Technology | NingBo Bank | Bank Loan With 3.9 Percent, December 2025 Due Date
Bank Loans and Line of Credit
Loan Detail	$ 550
Interest rate	3.90%
Loan Balance	$ 551	550
Beijing Tongmei Xtal Technology | NingBo Bank | Bank Loan with 3.9 Percent, January 2026 Due Date
Bank Loans and Line of Credit
Loan Detail	$ 1,584
Interest rate	3.90%
Loan Balance	$ 1,584
Beijing Tongmei Xtal Technology | NingBo Bank | Bank Loan with 3.9 Percent, March 2026 Due Date
Bank Loans and Line of Credit
Loan Detail	$ 689
Interest rate	3.90%
Loan Balance	$ 689
Beijing Tongmei Xtal Technology | Industrial and Commercial Bank of China | Bank Loan with 3.3 Percent, September 2025 Due Date
Bank Loans and Line of Credit
Loan Detail	$ 2,851
Interest rate	3.30%
Loan Balance	$ 2,750	2,740
Beijing Tongmei Xtal Technology | China Citic Bank | Bank Loan With 2.9 Percent, June 2025 Due Date
Bank Loans and Line of Credit
Loan Detail	$ 2,752
Interest rate	2.90%
Loan Balance	$ 2,755	2,740
Beijing Tongmei Xtal Technology | China Citic Bank | Bank Loan with 2.9 Percent, July 2025 Due Date
Bank Loans and Line of Credit
Loan Detail	$ 2,851
Interest rate	2.90%
Loan Balance	$ 2,755	2,740
Beijing Tongmei Xtal Technology | China Citic Bank | Bank Loan with 2.9 Percent, September 2025 Due Date
Bank Loans and Line of Credit
Loan Detail	$ 1,426
Interest rate	2.90%
Loan Balance	$ 1,380	1,370
Beijing Tongmei Xtal Technology | Agricultural Bank of China | Bank Loan With 2.6 Percent, November 2025 Due Date
Bank Loans and Line of Credit
Loan Detail	$ 1,235
Interest rate	2.60%
Loan Balance	$ 1,240	1,235
Beijing Tongmei Xtal Technology | Agricultural Bank of China | Bank Loan With 2.6 Percent, December 2025 Due Date
Bank Loans and Line of Credit
Loan Detail	$ 137
Interest rate	2.60%
Loan Balance	$ 138	137
Beijing BoYu Semiconductor Vessel Craftwork Technology Co | Bank of China | Bank Loan with 2.3 Percent, September 2025 Due Date
Bank Loans and Line of Credit
Loan Detail	$ 1,145
Interest rate	2.30%
Loan Balance	$ 1,102	1,096
Beijing BoYu Semiconductor Vessel Craftwork Technology Co | Bank of China | Bank Loan With 2.4 Percent, December 2025 Due Date
Bank Loans and Line of Credit
Loan Detail	$ 274
Interest rate	2.40%
Loan Balance	$ 276	274
Beijing BoYu Semiconductor Vessel Craftwork Technology Co | Bank of Communications | Bank Loan with 3.0 Percent, May 2025 Due Date
Bank Loans and Line of Credit
Loan Detail	$ 274
Interest rate	3.00%
Loan Balance	$ 276	274
Beijing BoYu Semiconductor Vessel Craftwork Technology Co | Industrial Bank | Bank Loan With 2.7 Percent, November 2025 Due Date
Bank Loans and Line of Credit
Loan Detail	$ 1,370
Interest rate	2.70%
Loan Balance	$ 1,380	1,370
Beijing BoYu Semiconductor Vessel Craftwork Technology Co | Industrial and Commercial Bank of China | Bank Loan with 2.8 Percent, September 2025 Due Date
Bank Loans and Line of Credit
Loan Detail	$ 1,426
Interest rate	2.80%
Loan Balance	$ 1,380	1,370
Beijing BoYu Semiconductor Vessel Craftwork Technology Co | NanJing Bank | Bank Loan With 2.8 Percent, December 2025 Due Date
Bank Loans and Line of Credit
Loan Detail	$ 1,370
Interest rate	2.80%
Loan Balance	$ 1,380	$ 1,370