Property, Plant and Equipment

6 Months Ended

Jun. 30, 2021

Property Plant And Equipment [Abstract]

Property, Plant and Equipment

3. Property, Plant and Equipment

Property, plant and equipment were comprised of the following:

	June 30, 2021			December 31, 2020
Land and land improvements	$	10,330		$	10,473
Buildings		63,506			63,765
Machinery and equipment		342,202			339,203
Construction-in-process		7,098			4,896
Other		6,882			6,870
		430,018			425,207
Accumulated depreciation and amortization		(271,397	)		(263,109	)
Property, plant and equipment, net	$	158,621		$	162,098

The majority of the assets of the Corporation, except real property including the land and building of Union Electric Steel UK Limited, an indirect subsidiary of the Corporation (“UES-UK”), is pledged as collateral for the Corporation’s revolving credit facility (Note 6). Land and buildings of UES-UK equal to $2,936 (£2,122) at June 30, 2021, are held as collateral by the trustees of the UES-UK defined benefit pension plan (Note 7). The gross value of finance lease right-of-use assets and the related accumulated amortization equaled $2,981 and $1,093, respectively, as of June 30, 2021, and $3,430 and $1,222, respectively, at December 31, 2020. Amortization on assets under finance leases equaled $100 and $68 for the three months ended June 30, 2021, and 2020, and $218 and $138 for the six months ended June 30, 2021, and 2020, respectively.