Property and Equipment (Tables)

12 Months Ended

Dec. 31, 2014

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment [Table Text Block]

As of December 31, 2014 and 2013, the estimated useful lives and costs of our asset classes are as follows:

		December 31, 2014		December 31, 2013
	Lives	Cost (amounts in thousands)
Drilling rigs and equipment	2 - 25	$	1,168,404	$	1,223,621
Well servicing rigs and equipment	3 - 20	232,771		205,409
Wireline units and equipment	2 - 10	146,748		128,800
Coiled tubing units and equipment	1 - 7	60,389		47,761
Fishing and rental tools and equipment	3 - 15	—		17,264
Vehicles	3 - 15	55,014		65,796
Office equipment	1 - 10	11,521		9,274
Buildings and improvements	2 - 40	25,007		23,931
Land	—	2,419		2,268
		$	1,702,273	$	1,724,124