Property, Plant and Equipment

3 Months Ended

Mar. 31, 2017

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment

4. Property, Plant and Equipment

Property, plant and equipment were comprised of the following:

	March 31, 2017			December 31, 2016
Land and land improvements	$	11,806		$	11,747
Buildings		66,317			66,017
Machinery and equipment		325,733			323,684
Construction-in-process		4,450			2,595
Other		7,766			7,495
		416,072			411,538
Accumulated depreciation and amortization		(202,893	)		(197,130	)
	$	213,179		$	214,408

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 8). Land and buildings of UES-UK, equal to approximately $2,596 (£2,079) at March 31, 2017, are held as collateral by the trustees of the UES-UK defined benefit pension plan (see Note 7). The gross value of assets under capital lease and the related accumulated amortization as of March 31, 2017, approximated $3,642 and $802, respectively, and at December 31, 2016, approximated $3,610 and $691, respectively.