Property, Plant and Equipment

9 Months Ended

Sep. 30, 2021

Property, Plant and Equipment [Abstract]

(7) Property, Plant and Equipment

Property, plant and equipment are stated at cost, except for assets for which reduction in value is recorded during the period and assets acquired using purchase accounting and through fresh start accounting, which are recorded at fair value as of the date of acquisition. Depreciation on acquired assets is computed using the straight-line method over the estimated useful lives of the related assets as follows:


Machinery and equipment		3-12 years
Buildings, improvements and leasehold improvements		10-30 years
Automobiles, trucks, tractors and trailers		4-7 years
Furniture and fixtures		3-10 years

A summary of property, plant and equipment is as follows (in thousands):


	Successor			Predecessor
	September 30, 2021			December 31, 2020
Machinery and equipment	$	391,750		$	1,727,454
Buildings, improvements and leasehold improvements		79,071			171,635
Automobiles, trucks, tractors and trailers		7,729			11,742
Furniture and fixtures		19,997			31,407
Construction-in-progress		4,257			4,793
Land		31,067			33,394
Oil and gas producing assets		20,318			15,117
Total		554,189			1,995,542
Accumulated depreciation and depletion		(150,716	)		(1,587,435	)
Property, plant and equipment, net	$	403,473		$	408,107

Depreciation expense (excluding depletion, amortization and accretion) for the Successor Quarter and Prior Predecessor Quarter was $56.9 million and $24.9 million, respectively. Depreciation expense (excluding depletion, amortization and accretion) for the Successor Period, Current Predecessor Period and Prior Predecessor Period was $152.3 million, $9.5 million and $79.7 million, respectively.

As discussed above, in connection with the valuation process under fresh start accounting, certain fully depreciated assets were assigned an estimated fair value of approximately $282.1 million and remaining useful life of less than 36 months. Depreciation expense for the remainder of 2021 is estimated to be approximately $50.7 million and approximately $75.1 million and $46.5 million for the years ended December 31, 2022 and 2023, respectively. See Note 3 – “Fresh Start Accounting” for additional information.