Summary Of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2019

Summary Of Significant Accounting Policies [Abstract]

Schedule Of Inventory

	December 31,
	2019		2018
Finished goods	$	45,127	$	54,144
Raw materials		16,130		16,795
Work-in-process		9,360		5,544
Supplies and consumables		33,322		30,822
Total	$	103,939	$	107,305

Estimated Useful Lives Of The Related Assets

Buildings and improvements	5	to	40	years
Machinery and equipment	2	to	25	years
Automobiles, trucks, tractors and trailers	3	to	10	years
Furniture and fixtures	2	to	10	years

Summary Of Activity Of Goodwill

			Onshore
	Drilling		Completion
	Products		and Workover			Production
	and Services		Services			Services		Total
Balance, December 31, 2017	$	138,493	$	583,550		$	85,817	$	807,860
Foreign currency translation adjustment		(1,705)		-			(529)		(2,234)
Reduction in value of assets		-		(583,550)	(1)		(85,288)		(668,838)
Balance, December 31, 2018		136,788		-			-		136,788
Foreign currency translation adjustment		907		-			-		907
Balance, December 31, 2019	$	137,695	$	-		$	-	$	137,695

(1)

Composition Of Intangible And Other Long-term Assets

		December 31,
		2019						2018
	Estimated	Gross		Accumulated		Net		Gross		Accumulated		Net
	Useful Lives	Amount		Amortization		Balance		Amount		Amortization		Balance
Customer relationships	17 years	$	19,902	$	(14,680)	$	5,222	$	133,374	$	(59,711)	$	73,663
Tradenames	10 years		8,907		(5,413)		3,494		20,717		(13,334)		7,383
Non-compete agreements	3 years		3,464		(3,106)		358		4,474		(3,313)		1,161
Total		$	32,273	$	(23,199)	$	9,074	$	158,565	$	(76,358)	$	82,207

Summary Of The Activity For Company's Decommissioning Liabilities

	December 31,
	2019		2018
Balance at beginning of period	$	130,096	$	130,397
Accretion		6,332		4,906
Liabilities settled		(147)		(5,207)
Balance at end of period	$	136,281	$	130,096