Property and Equipment (Tables)

12 Months Ended

Dec. 31, 2015

Property, Plant and Equipment [Abstract]

Property, Plant and Equipment [Table Text Block]

As of December 31, 2015 and 2014, the estimated useful lives and costs of our asset classes are as follows:

		December 31, 2015		December 31, 2014
	Lives	Cost (amounts in thousands)
Drilling rigs and equipment	2 - 25	$	649,805	$	1,168,404
Well servicing rigs and equipment	3 - 20	246,539		232,771
Wireline units and equipment	2 - 10	148,501		146,748
Coiled tubing units and equipment	1 - 7	10,740		60,389
Vehicles	3 - 15	51,776		55,014
Office equipment	1 - 10	11,986		11,521
Buildings and improvements	2 - 40	25,228		25,007
Land	—	2,419		2,419
		$	1,146,994	$	1,702,273