Debt - Additional Information (Detail) ¥ in Thousands		1 Months Ended			12 Months Ended
	Sep. 29, 2022 USD ($)	Oct. 31, 2024	Jun. 30, 2023 USD ($)	Aug. 31, 2022 USD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2024 CNY (¥)	Dec. 31, 2023 USD ($)	Dec. 31, 2023 CNY (¥)	Dec. 31, 2021 USD ($)	Dec. 31, 2023 CNY (¥)	Jul. 01, 2023	Dec. 31, 2022 USD ($)	Oct. 14, 2022	Jun. 29, 2021 USD ($)
Line Of Credit Facility [Line Items]
Future principal payments, next twelve months					$ 12,186,000
Future principal payments, in year two					59,277,000
Future principal payments, in year three					3,564,000
Future principal payments, in year four					3,725,000
Future principal payments, in year five					3,993,000
Future principal payments, thereafter					45,835,000
Interest capitalized on strategic capital projects					$ 251,000		$ 1,522,000
Lessee lease term							20 years			20 years
Estimated cost on upgrading existing equipment									$ 26,000,000
Weighted average remaining lease term					3 years		4 years			4 years
Cash paid for finance lease liabilities					$ 467,000		$ 558,000
Cash outflow from operating lease					87,000		90,000
Cash outflow from financing lease					380,000		468,000
ATR [Member]
Line Of Credit Facility [Line Items]
Accrued interest					0		0
Interest paid					2,000	¥ 17	6,000	¥ 42
Capital Expenditures [Member]
Line Of Credit Facility [Line Items]
Proceeds from disbursement agreement							2,500,000
Industrial Revenue Bonds ("IRB") [Member]
Line Of Credit Facility [Line Items]
Outstanding amount					$ 9,191,000		9,191,000
Minority Shareholder Loan [Member]
Line Of Credit Facility [Line Items]
Outstanding amount							$ 665,000
Effective interest rate					4.35%		4.35%			4.35%
Accrued interest					$ 0		$ 0
Interest paid					$ 2,000	¥ 17	6,000	42
Minority Shareholder Loan [Member] | ATR [Member]
Line Of Credit Facility [Line Items]
Debt instrument, repayment date					2024-01	2024-01
Outstanding amount					$ 0		665,000			¥ 4,713
Debt instrument, borrowed							1,768,000	12,317
Debt instrument, repaid					$ 664,000	¥ 4,713	$ 1,096,000	¥ 7,604
Minimum [Member] | Minority Shareholder Loan [Member]
Line Of Credit Facility [Line Items]
Interest period					3 years	3 years
Minimum [Member] | Capital Leases [Member]
Line Of Credit Facility [Line Items]
Effective interest rate during period					6.00%	6.00%	5.00%	5.00%
Maximum [Member] | Minority Shareholder Loan [Member]
Line Of Credit Facility [Line Items]
Interest period					5 years	5 years
Maximum [Member] | Capital Leases [Member]
Line Of Credit Facility [Line Items]
Effective interest rate during period					9.00%	9.00%	6.00%	6.00%
Taxable Industrial Revenue Bond [Member] | Industrial Revenue Bonds ("IRB") [Member]
Line Of Credit Facility [Line Items]
Outstanding amount					$ 7,116,000
Interest at a floating rate on tax-exempt IRB maturing in 2027/2029					5.37%		5.28%			5.28%
Tax Exempt Industrial Revenue Bond Two [Member] | Industrial Revenue Bonds ("IRB") [Member]
Line Of Credit Facility [Line Items]
Outstanding amount							$ 2,075,000
Interest at a floating rate on tax-exempt IRB maturing in 2027/2029					3.68%		3.71%			3.71%
Sale And Leaseback Financing Obligations [Member]
Line Of Credit Facility [Line Items]
Deferred financing fees												$ 144,000
Lessee lease term												20 years	20 years
Lessee, operating lease, option to extend					however, UES may extend the lease for the Properties for four successive periods of five years each. If fully extended, the Restated Lease would expire in August 2062.	however, UES may extend the lease for the Properties for four successive periods of five years each. If fully extended, the Restated Lease would expire in August 2062.
Lessee, operating term period													5 years
Extended lease expiration date													2062-08
Lease repurchase percentage on lessor investment for properties													115.00%
Rental properties					$ 3,719,000
Incremental Percentage On Annual Lease Payment		2.04%
Effective interest rate during period					8.24%	8.24%	8.39%	8.39%
Sale And Leaseback Financing Obligations [Member] | Capital Expenditures [Member]
Line Of Credit Facility [Line Items]
Estimated cost on upgrading existing equipment				$ 2,500,000
Proceeds from disbursement agreement			$ 2,500,000
Annual rent adjustment to repay restated lease				$ 2,500,000
Sale And Leaseback Financing Obligations [Member] | Maximum [Member]
Line Of Credit Facility [Line Items]
Incremental Percentage On Annual Lease Payment					2.04%	2.04%
Change in consumer price index ratio					1.25	1.25
Equipment Financing Facility [Member]
Line Of Credit Facility [Line Items]
Agreement borrowing capacity	$ 20,000,000
Outstanding amount					$ 16,782,000		$ 16,719,000
Effective interest rate											10.25%
Debt Instrument, Term	84 months
Payments of principal and interest					$ 293,000
Debt instrument, maturity date, description					2031	2031
Equipment Financing Facility [Member] | Secured Overnight Financing Rate S O F R Adjustment Member | Line Of Credit [Member]
Line Of Credit Facility [Line Items]
Debt instrument basis spread					0.31%	0.31%
Equipment Financing Facility [Member] | Daily Secured Overnight Financing Rate S O F R [Member] | Line Of Credit [Member]
Line Of Credit Facility [Line Items]
Debt instrument basis spread					3.59%	3.59%
Equipment Financing Facility [Member] | Secured Overnight Financing Rate S O F R Adjustment Margin [Member] | Line Of Credit [Member]
Line Of Credit Facility [Line Items]
Debt instrument basis spread					4.50%	4.50%
Equipment Financing Facility [Member] | Term Notes [Member]
Line Of Credit Facility [Line Items]
Outstanding amount					$ 16,782,000		$ 900,000
Effective interest rate during period					8.75%	8.75%	8.69%	8.69%
Equipment Financing Facility [Member] | Term Loan [Member]
Line Of Credit Facility [Line Items]
Outstanding amount							$ 15,819,000
Effective interest rate	8.00%		8.00%
Equipment Financing Facility [Member] | Term Loan [Member] | Minimum [Member]
Line Of Credit Facility [Line Items]
Effective interest rate					8.40%
Equipment Financing Facility [Member] | Term Loan [Member] | Maximum [Member]
Line Of Credit Facility [Line Items]
Effective interest rate					9.22%
Revolving Credit Facility [Member]
Line Of Credit Facility [Line Items]
Agreement borrowing capacity														$ 130,000,000
Allowance for new capital equipment financing														20,000,000
Maturity date					Jun. 29, 2026	Jun. 29, 2026
Commitment fee payable percentage					0.25%	0.25%
Outstanding amount					$ 56,000,000		$ 56,000,000
Line of credit, remaining borrowing capacity					$ 20,562,000
Deferred financing fees									$ 485,000
Effective interest rate during period					8.08%	8.08%	7.82%	7.82%
Revolving Credit Facility [Member] | Minimum [Member]
Line Of Credit Facility [Line Items]
Fixed charge coverage ratio					1.05
Revolving Credit Facility [Member] | SOFR
Line Of Credit Facility [Line Items]
Debt instrument description of interest rate					SOFR, as adjusted, plus an applicable margin ranging between 2.00% to 2.50% based on the quarterly average excess availability	SOFR, as adjusted, plus an applicable margin ranging between 2.00% to 2.50% based on the quarterly average excess availability
Revolving Credit Facility [Member] | SOFR | Minimum [Member]
Line Of Credit Facility [Line Items]
Debt instrument basis spread					2.00%	2.00%
Revolving Credit Facility [Member] | SOFR | Maximum [Member]
Line Of Credit Facility [Line Items]
Debt instrument basis spread					2.50%	2.50%
Revolving Credit Facility [Member] | Base Rate [Member]
Line Of Credit Facility [Line Items]
Debt instrument description of interest rate					the alternate base rate plus an applicable margin ranging between 1.00% to 1.50%	the alternate base rate plus an applicable margin ranging between 1.00% to 1.50%
Revolving Credit Facility [Member] | Base Rate [Member] | Minimum [Member]
Line Of Credit Facility [Line Items]
Debt instrument basis spread					1.00%	1.00%
Revolving Credit Facility [Member] | Base Rate [Member] | Maximum [Member]
Line Of Credit Facility [Line Items]
Debt instrument basis spread					1.50%	1.50%
Revolving Credit Facility [Member] | Senior Secured Asset-Based Revolving Credit Facility [Member]
Line Of Credit Facility [Line Items]
Agreement borrowing capacity														100,000,000
Revolving Credit Facility [Member] | Letter of Credit [Member]
Line Of Credit Facility [Line Items]
Agreement borrowing capacity														40,000,000
Revolving Credit Facility [Member] | European Credit Facility [Member]
Line Of Credit Facility [Line Items]
Agreement borrowing capacity														30,000,000
Borrowings					$ 0		$ 0
Revolving Credit Facility [Member] | Swedish Credit Facility [Member]
Line Of Credit Facility [Line Items]
Agreement borrowing capacity														$ 7,500,000
Borrowings					$ 0		$ 0