Industry Segments (Details 2) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Corporate Overhead Footnote
General and administrative expense	$ 11,688	$ 10,064	$ 20,537	$ 21,458
Depreciation and amortization	254	527	512	1,081
Interest expense	4,415	4,610	9,412	9,141
Other general corporate (income) expense, net	914	718	1,376	1,280
Total	$ 17,271	$ 15,919	$ 31,837	$ 32,960