Goodwill and Intangible Assets (Tables)

12 Months Ended

Dec. 31, 2019

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Changes in the Carrying Amount of Goodwill

The changes in the carrying amount of goodwill (in thousands) by business segment consisted of the following:

	Oil & Gas Proppants Segment			Industrial & Specialty Products Segment		Total
Balance at December 31, 2017	247,467			24,612		272,079
MS Sand acquisition measurement period adjustment	2,800			—		2,800
EPMH acquisition and measurement period adjustment	—			150,628		150,628
Oil & Gas Sand impairment	(164,167		)	—		(164,167		)
Goodwill	250,267			175,240		425,507
Impairment losses	(164,167		)	—		(164,167		)
Balance at December 31, 2018	86,100			175,240		261,340
EPMH acquisition measurement period adjustment	—			12,184		12,184
Balance at December 31, 2019	$	86,100		$	187,424	$	273,524

Schedule of Changes in the Carrying Amount of Definite-Lived Intangible Assets

The changes in the carrying amount of intangible assets (in thousands) consisted of the following:

	December 31, 2019										December 31, 2018
	Gross Carrying Amount		Accumulated Amortization			Impairments			Net		Gross Carrying Amount		Accumulated Amortization			Impairments			Net
Technology and intellectual property	$	86,183	$	(17,080	)	—			$	69,103	$	83,616	$	(11,168	)	—			$	72,448
Customer relationships	68,599		(18,737		)	$	(1,240	)	48,622		68,664		(13,826		)	—			54,838
Total definite-lived intangible assets:	$	154,782	$	(35,817	)	$	(1,240	)	$	117,725	$	152,280	$	(24,994	)	$	—		$	127,286
Trade names	65,390		—			—			65,390		71,118		—			(4,478		)	66,640
Other	700		—			—			700		700		—			—			700
Total intangible assets:	$	220,872	$	(35,817	)	$	(1,240	)	$	183,815	$	224,098	$	(24,994	)	$	(4,478	)	$	194,626

Schedule of Changes in the Carrying Amount of Indefinite-Lived Intangible Assets

The changes in the carrying amount of intangible assets (in thousands) consisted of the following:

	December 31, 2019										December 31, 2018
	Gross Carrying Amount		Accumulated Amortization			Impairments			Net		Gross Carrying Amount		Accumulated Amortization			Impairments			Net
Technology and intellectual property	$	86,183	$	(17,080	)	—			$	69,103	$	83,616	$	(11,168	)	—			$	72,448
Customer relationships	68,599		(18,737		)	$	(1,240	)	48,622		68,664		(13,826		)	—			54,838
Total definite-lived intangible assets:	$	154,782	$	(35,817	)	$	(1,240	)	$	117,725	$	152,280	$	(24,994	)	$	—		$	127,286
Trade names	65,390		—			—			65,390		71,118		—			(4,478		)	66,640
Other	700		—			—			700		700		—			—			700
Total intangible assets:	$	220,872	$	(35,817	)	$	(1,240	)	$	183,815	$	224,098	$	(24,994	)	$	(4,478	)	$	194,626

Schedule of Estimated Amortization Expense Related to Definite-Lived Intangible Assets

The estimated amortization expense related to definite-lived intangible assets (in thousands) for the five succeeding years is as follows:

2020	$	10,863
2021	10,861
2022	10,846
2023	10,841
2024	10,843