Summary of Significant Accounting Policies (Tables)

3 Months Ended

Mar. 31, 2015

Summary of Significant Accounting Policies

Schedule of fair value hierarchy of assets measured on nonrecurring basis and gain (losses) recorded

	Assets at Fair Value																Total Losses
	March 31, 2015								March 31, 2014								Three Months Ended March 31,
	Total		Level 1		Level 2		Level 3		Total		Level 1		Level 2		Level 3		2015		2014
	(in thousands)																(in thousands)
Equipment held for sale	$	17,600	$	—	$	14,833	$	2,767	$	30,376	$	—	$	19,844	$	10,532	$	(24)	$	(295)
Total	$	17,600	$	—	$	14,833	$	2,767	$	30,376	$	—	$	19,844	$	10,532	$	(24)	$	(295)