Revenue and Accounts Receivable (Disaggregation Of Revenues, By Type) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Disaggregation of Revenue [Line Items]
Total Revenues	$ 201,081	$ 244,473	$ 409,715	$ 464,610
Rentals [Member]
Disaggregation of Revenue [Line Items]
Total Revenues	99,851	112,411	207,942	221,232
Well Services [Member]
Disaggregation of Revenue [Line Items]
Total Revenues	101,230	132,062	201,773	243,378
Services [Member]
Disaggregation of Revenue [Line Items]
Total Revenues	81,687	106,130	155,024	199,420
Services [Member] | Rentals [Member]
Disaggregation of Revenue [Line Items]
Total Revenues	19,360	17,875	40,010	35,020
Services [Member] | Well Services [Member]
Disaggregation of Revenue [Line Items]
Total Revenues	62,327	88,255	115,014	164,400
Rentals Services [Member]
Disaggregation of Revenue [Line Items]
Total Revenues	76,331	85,361	157,421	170,971
Rentals Services [Member] | Rentals [Member]
Disaggregation of Revenue [Line Items]
Total Revenues	71,159	81,647	147,232	163,722
Rentals Services [Member] | Well Services [Member]
Disaggregation of Revenue [Line Items]
Total Revenues	5,172	3,714	10,189	7,249
Product Sales [Member]
Disaggregation of Revenue [Line Items]
Total Revenues	43,063	52,982	97,270	94,219
Product Sales [Member] | Rentals [Member]
Disaggregation of Revenue [Line Items]
Total Revenues	9,332	12,889	20,700	22,490
Product Sales [Member] | Well Services [Member]
Disaggregation of Revenue [Line Items]
Total Revenues	$ 33,731	$ 40,093	$ 76,570	$ 71,729