Operating Segment Results (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024	Dec. 31, 2024
Segment Reporting Information [Line Items]
Net sales	$ 107,921	$ 122,992	$ 213,609	$ 244,190
Cost of sales (exclusive of depreciation and amortization shown separately below)	89,699	101,257	181,345	202,343
Selling, general, and administrative expense	12,095	13,511	23,265	26,859
Depreciation	5,512	8,305	10,881	17,396
Segment Reporting, Other Segment Item, Amount	2,079	2,066	4,371	4,522
Operating Income (Loss)	(1,464)	(2,147)	(6,253)	(6,930)
Income (Loss) from Continuing Operations before Equity Method Investments, Income Taxes, Noncontrolling Interest	(9,509)	(4,559)	(17,323)	(18,861)
Interest expense	5,657	5,873	10,851	11,239
Other Nonoperating Income (Expense)	(619)	(3,461)	(2,788)	692
Depreciation and amortization	8,918	11,761	17,692	24,308
Segment, Expenditure, Addition to Long-Lived Assets	3,723	3,592	7,630	9,052
Total assets	460,760		460,760		$ 456,893
Gain (Loss) on Extinguishment of Debt	3,007	0	3,007	0
Operating Segments | Mobile Solutions [Member]
Segment Reporting Information [Line Items]
Net sales	63,391	72,855	125,635	145,915
Cost of sales (exclusive of depreciation and amortization shown separately below)	55,817	62,968	112,267	126,055
Selling, general, and administrative expense	3,785	4,190	7,323	7,975
Depreciation	4,294	6,870	8,503	14,442
Segment Reporting, Other Segment Item, Amount	605	457	1,339	1,216
Operating Income (Loss)	(1,110)	(1,630)	(3,797)	(3,773)
Depreciation and amortization	5,133	7,710	10,180	16,119
Segment, Expenditure, Addition to Long-Lived Assets	2,865	2,354	5,531	6,182
Total assets	297,796		297,796		294,204
Operating Segments | Power Solutions [Member]
Segment Reporting Information [Line Items]
Net sales	44,641	50,151	88,149	98,389
Cost of sales (exclusive of depreciation and amortization shown separately below)	33,997	38,310	69,265	76,420
Selling, general, and administrative expense	2,387	3,604	5,069	6,864
Depreciation	804	1,078	1,584	2,127
Segment Reporting, Other Segment Item, Amount	1,671	1,839	3,426	3,679
Operating Income (Loss)	5,782	5,320	8,805	9,299
Depreciation and amortization	3,371	3,694	6,718	7,362
Segment, Expenditure, Addition to Long-Lived Assets	338	1,041	1,212	2,036
Total assets	131,057		131,057		124,460
Corporate, Non-Segment
Segment Reporting Information [Line Items]
Depreciation and amortization	414	357	794	827
Segment, Expenditure, Addition to Long-Lived Assets	520	197	887	834
Total assets	31,907		31,907		$ 38,229
Intersegment Eliminations [Member]
Segment Reporting Information [Line Items]
Net sales	(111)	(14)	(175)	(114)
Cost of sales (exclusive of depreciation and amortization shown separately below)	(115)	(21)	(187)	(132)
Selling, general, and administrative expense	5,923	5,717	10,873	12,020
Depreciation	414	357	794	827
Segment Reporting, Other Segment Item, Amount	(197)	(230)	(394)	(373)
Operating Income (Loss)	$ (6,136)	$ (5,837)	$ (11,261)	$ (12,456)