Industry Segments (Details 2) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Corporate Overhead Footnote
General and administrative expense	$ 8,021	$ 11,688	$ 17,950	$ 20,537
Depreciation and amortization	112	254	226	512
Interest expense	5,596	4,415	11,647	9,412
Other general corporate (income) expense, net	2,450	914	2,740	1,376
Total	$ 16,179	$ 17,271	$ 32,563	$ 31,837