Write-downs and other charges (Tables)

3 Months Ended

Mar. 31, 2015

Asset Impairments and write-downs and other charges [Abstract]

Schedule of Losses on Asset Disposals and Other Nonroutine Transactions [Table Text Block]

Write-downs and other charges, net consisted of the following (amounts in thousands):

	Three Months Ended March 31,
	2015		2014
Loss on disposal of assets, net	$	2,036	$	1,678
Severance expense	269		464
Other	708		(617		)
	$	3,013	$	1,525