Property, Plant and Equipment

3 Months Ended

Mar. 31, 2022

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment

3. Property, Plant and Equipment

Property, plant and equipment as of March 31, 2022 and December 31, 2021 are comprised of the following (in thousands):

	March 31, 2022			December 31, 2021
Buildings and related structures	$	24,003		$	24,273
Machinery and equipment		103,386			105,300
Finance lease right-of-use assets		309			316
Others		32,682			32,396
		160,380			162,285
Less: accumulated depreciation		(95,839	)		(94,119	)
Land		13,608			13,898
Construction in progress		24,526			25,818
Property, plant and equipment, net	$	102,675		$	107,882

Aggregate depreciation expenses totaled $3,706 thousand and $3,262 thousand for the three months ended March 31, 2022 and 2021, respectively.