Property and Equipment

3 Months Ended

Mar. 31, 2021

Property, Plant and Equipment [Abstract]

Property and equipment consist of the following:


	Estimated useful lives (in years)	March 31,		December 31,
($ in thousands)		2021		2020
Land	N/A	$	38,448	$	38,346
Field services equipment	2-7	1,309,525		1,249,933
Vehicles	4-7	58,545		59,741
Buildings and facilities	5-30	156,499		156,109
Mineral reserves	>25	78,793		78,793
Office equipment and furniture	2-7	6,946		6,840
		1,648,756		1,589,762
Less accumulated depreciation and depletion		(678,198)		(622,530)
		970,558		967,232
Construction in-progress	N/A	135,380		153,718
		$	1,105,938	$	1,120,950

Depreciation expense for the three months ended March 31, 2021 and 2020 was $56.7 million and $41.7 million, respectively. Depletion expense for the three months ended March 31, 2021 and 2020 was $0.3 million and $0, respectively.

During the year ended December 31, 2020, as a result of negative market indicators including the COVID-19 pandemic, the increased supply of low-priced oil, and customer cancellations, the Company concluded these triggering events could indicate possible impairment of property and equipment. The Company performed a quantitative and qualitative impairment analysis and determined that no impairment had occurred as of March 31, 2020. As of March 31, 2021, the Company concluded that no additional triggering events occurred and the conclusion reached at March 31, 2020 is still appropriate