Bank Loans and Line of Credit - Schedule of Bank Loans (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023
Bank Loans and Line of Credit
Loan Balance	$ 45,963	$ 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		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		876
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		1,003
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 2.4 Percent, September 2025 Due Date
Bank Loans and Line of Credit
Loan Detail	$ 1,426
Interest rate	2.40%
Loan Balance	$ 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	$ 1,370
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	$ 685
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	$ 1,370
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	$ 2,466
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	$ 1,235
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	$ 137
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 \| 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 \| 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
Interest rate	3.00%
Loan Balance		1,414
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	$ 3,565
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 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
Interest rate	4.30%
Loan Balance		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		2,825
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	$ 2,740
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	$ 2,679
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	$ 1,440
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		2,820
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		1,271
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
Interest rate	4.30%
Loan Balance		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	$ 1,630
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	$ 1,822
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	$ 550
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	$ 2,740
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	$ 2,740
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	$ 1,370
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
Interest rate	3.30%
Loan Balance		2,825
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	$ 2,740
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		2,752
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 \| 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	$ 1,096
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	$ 274
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 \| 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	$ 274
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		$ 708
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	$ 1,370
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 \| 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
Interest rate	2.70%
Loan Balance		$ 1,414
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	$ 1,370
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	$ 1,370