Property, Plant, and Equipment, Net (Tables)

12 Months Ended

Dec. 31, 2021

Property, Plant and Equipment [Abstract]

Schedule of Property, Plant and Equipment

Property, plant, and equipment, net consists of the following:

	December 31, 2021		December 31, 2020		Depreciable Life – Years
	(dollars in thousands)
Land	$	538	$	538
Buildings	7,630		6,923		23 - 40
Shop equipment	26,049		23,436		7 - 10
Leasehold improvements	1,283		1,245		3 - 10
Office equipment	3,047		2,331		3 - 7
Mobile equipment	50		152		3
Construction in progress	1,554		2,315
Total cost	40,151		36,940
Accumulated depreciation	17,584		14,557
Property, plant, and equipment, net	$	22,567	$	22,383