Property and Equipment (Tables)

12 Months Ended

Dec. 31, 2019

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment [Table Text Block]

The following table presents the estimated useful lives and costs of our assets by class:

		As of December 31,
		2019		2018
	Lives	Cost (amounts in thousands)
Drilling rigs and equipment	3 - 25	$	613,061	$	590,148
Well servicing rigs and equipment	3 - 20	259,102		252,589
Wireline units and equipment	1 - 10	131,628		144,171
Coiled tubing units and equipment	1 - 7	30,816		25,689
Vehicles	3 - 10	50,308		50,317
Office equipment	3 - 10	12,353		11,606
Buildings and improvements	3 - 40	16,988		23,610
Property and equipment not yet placed in service	—	3,330		17,718
Land	—	1,960		2,367
		$	1,119,546	$	1,118,215