Industry Segments (Details 2) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Corporate Overhead Footnote
General and administrative expense	$ 8,748	$ 13,440	$ 26,698	$ 33,978
Depreciation and amortization	101	230	328	743
Interest expense	4,699	4,011	16,347	13,423
Other general corporate (income) expense, net	(882)	585	1,856	1,959
Total	$ 12,666	$ 18,266	$ 45,229	$ 50,103