Property, Plant and Equipment

3 Months Ended

Mar. 31, 2018

Property Plant And Equipment [Abstract]

Property, Plant and Equipment

3. Property, Plant and Equipment

Property, plant and equipment were comprised of the following:

	March 31, 2018			December 31, 2017
Land and land improvements	$	12,140		$	12,172
Buildings		68,845			68,572
Machinery and equipment		343,236			340,396
Construction-in-process		5,908			5,019
Other		7,204			7,193
		437,333			433,352
Accumulated depreciation and amortization		(224,374	)		(218,372	)
Property, plant and equipment, net	$	212,959		$	214,980

The majority of the assets of the Corporation, except real property including the land and building of Union Electric Steel UK Limited (“UES-UK”), is pledged as collateral for the Corporation’s Revolving Credit and Security Agreement (Note 7). Land and buildings of UES-UK, equal to approximately $2,939 (£2,098) at March 31, 2018, are held as collateral by the trustees of the UES-UK defined benefit pension plan (see Note 6). The gross value of assets under capital lease and the related accumulated amortization as of March 31, 2018, approximated $3,907 and $956, respectively, and at December 31, 2017, approximated $4,082 and $1,101, respectively.