Debt - Additional Information (Detail) ¥ in Thousands		1 Months Ended		3 Months Ended		6 Months Ended				12 Months Ended
	Sep. 29, 2022 USD ($)	Jun. 30, 2023 USD ($)	Aug. 31, 2022 USD ($)	Jun. 30, 2024 USD ($)	Jun. 30, 2023	Jun. 30, 2024 USD ($) Bond	Jun. 30, 2024 CNY (¥) Bond	Jun. 30, 2023 USD ($)	Jun. 30, 2023 CNY (¥)	Dec. 31, 2023 USD ($)	Dec. 31, 2021 USD ($)	Jul. 01, 2023	Oct. 14, 2022	Jun. 29, 2021 USD ($)
Line Of Credit Facility [Line Items]
Swing loans				$ 3,896,000		$ 3,896,000				$ 0
Lessee lease term										20 years
Estimated cost on upgrading existing equipment											$ 26,000,000
Life of underlying asset						15 years	15 years
ATR [Member] | Akers AB [Member]
Line Of Credit Facility [Line Items]
Ownership interest percentage				59.88%		59.88%
Industrial Revenue Bonds ("IRB") [Member]
Line Of Credit Facility [Line Items]
Long term debt				$ 9,191,000		$ 9,191,000				$ 9,191,000
Number of industrial revenue bonds | Bond						2	2
Minority Shareholder Loan [Member]
Line Of Credit Facility [Line Items]
Debt instrument, borrowed								$ 669,000	¥ 4,600
Debt instrument, repaid						$ 664,000	¥ 4,713	$ 669,000	¥ 4,600
Capital Additions [Member]
Line Of Credit Facility [Line Items]
Estimated cost on upgrading existing equipment			$ 2,500,000
Proceeds from disbursement agreement		$ 2,500,000								2,500,000
Annual rent adjustment to repay restated lease			$ 2,500,000
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
Revolving Credit Facility [Member]
Line Of Credit Facility [Line Items]
Agreement borrowing capacity														$ 130,000,000
Allowance for new equipment financing														20,000,000
Maturity date						Jun. 29, 2026	Jun. 29, 2026
Commitment fee payable percentage						0.25%	0.25%
Average interest rate				8.22%	7.87%	8.22%	8.22%	7.78%	7.78%
Long term debt				$ 61,896,000		$ 61,896,000				56,000,000
Line of credit, remaining borrowing capacity				$ 20,540,000		$ 20,540,000
Revolving Credit Facility [Member] | Minimum [Member]
Line Of Credit Facility [Line Items]
Fixed charge coverage ratio				1.05		1.05
Revolving Credit Facility [Member] | SOFR [Member]
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 [Member] | Minimum [Member]
Line Of Credit Facility [Line Items]
Debt instrument basis spread						2.00%	2.00%
Revolving Credit Facility [Member] | SOFR [Member] | 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				0
Revolving Credit Facility [Member] | Swedish Credit Facility [Member]
Line Of Credit Facility [Line Items]
Agreement borrowing capacity														$ 7,500,000
Sale and Leaseback Financing Obligations [Member]
Line Of Credit Facility [Line Items]
Long term debt				44,982,000		44,982,000				44,488,000
Taxable Industrial Revenue Bond [Member] | Industrial Revenue Bonds ("IRB") [Member]
Line Of Credit Facility [Line Items]
Long term debt				$ 7,116,000		$ 7,116,000
Interest at a floating rate on tax-exempt IRB maturing in 2027/2029				8.27%	7.81%	6.81%	6.81%	6.17%	6.17%
Tax Exempt Industrial Revenue Bond Two [Member] | Industrial Revenue Bonds ("IRB") [Member]
Line Of Credit Facility [Line Items]
Long term debt				$ 2,075,000		$ 2,075,000
Interest at a floating rate on tax-exempt IRB maturing in 2027/2029				6.91%	3.77%	5.31%	5.31%	3.34%	3.34%
Equipment Financing Facility [Member]
Line Of Credit Facility [Line Items]
Agreement borrowing capacity	$ 20,000,000
Long term debt				$ 17,789,000		$ 17,789,000				16,719,000
Effective interest rate												10.25%
Payments of principal and interest						$ 293,000
Debt instrument, maturity date, description						2031	2031
Debt Instrument, Term	84 months
Equipment Financing Facility [Member] | Term Loan [Member]
Line Of Credit Facility [Line Items]
Long term debt										15,819,000
Effective interest rate	8.00%	8.00%			8.00%			8.00%	8.00%
Equipment Financing Facility [Member] | Term Notes [Member]
Line Of Credit Facility [Line Items]
Long term debt										$ 900,000
Effective interest rate during period				8.65%		8.58%	8.58%
Equipment Financing Facility [Member] | Term Notes [Member] | Minimum [Member]
Line Of Credit Facility [Line Items]
Percentage of converted fixed interest rate						8.40%	8.40%
Equipment Financing Facility [Member] | Term Notes [Member] | Maximum [Member]
Line Of Credit Facility [Line Items]
Percentage of converted fixed interest rate						9.22%	9.22%
Disbursement Agreement [Member]
Line Of Credit Facility [Line Items]
Lessee lease term													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%
Effective interest rate during period				8.24%	7.95%	8.24%	8.24%	7.95%	7.95%
Rental properties				$ 3,645,000		$ 3,645,000