Consolidated Statements of Shareholders' Deficit - USD ($) $ in Thousands	Total	Preferred Stock	Common Stock	Other Paid-in Capital	Accumulated Other Comprehensive Loss	Accumulated Deficit	Non-controlling Interest
Beginning balance at Dec. 31, 2012	$ (286,231)	$ 160	$ 35,502	$ 130,852	$ (148,345)	$ (289,727)	$ (14,673)
Beginning balance, shares at Dec. 31, 2012		159,960	14,201,411
Preferred dividends declared	(1,360)					(1,360)
Common stock issued as compensation	5,322		$ 560	4,762
Common stock issued as compensation, shares			224,129
Issuance of restricted stock	(336)		$ 417	(753)
Issuance of restricted stock, shares			166,691
Assumption of noncontrolling interest of subsidiary	18,103						18,103
Net loss allocated to noncontrolling interest	(8,127)					(4,697)	(3,430)
Other comprehensive income (loss)	84,750				84,750
Ending balance at Dec. 31, 2013	(187,879)	$ 160	$ 36,479	134,861	(63,595)	(295,784)	0
Ending balance, shares at Dec. 31, 2013		159,960	14,592,231
Preferred dividends declared	(859)					(859)
Common stock issued as compensation	6,082		$ 116	5,966
Common stock issued as compensation, shares			47,386
Common stock options exercised	750		$ 88	662
Common stock options exercised, shares			35,000
SARs exercised	0		$ 40	(40)
SARs exercised (shares)			16,130
Conversion of convertible notes and securities	0	$ (68)	$ 1,168	(1,100)
Conversion of convertible notes and securities, shares		(68,291)	466,537
Common stock issued to pension plans assets	1,941		$ 117	1,824
Common stock issued to pension plans assets, shares			46,323
Offering shares	56,473		$ 4,211	52,262
Offering shares (shares)			1,684,507
Issuance of restricted stock	(2,846)		$ 537	(3,383)
Issuance of restricted stock, shares			214,663
Changes in WMLP ownership interest, net				(5,408)			5,408
Assumption of noncontrolling interest of subsidiary	10,774						10,774
Net loss allocated to noncontrolling interest	(173,180)					(172,259)	(921)
Other comprehensive income (loss)	(60,701)				(60,701)
Ending balance at Dec. 31, 2014	(349,445)	$ 92	$ 42,756	185,644	(124,296)	(468,902)	15,261
Ending balance, shares at Dec. 31, 2014		91,669	17,102,777
Preferred dividends declared	(3)					(3)
WMLP distributions	(797)						(797)
Common stock issued as compensation	7,748		$ 100	7,648
Common stock issued as compensation, shares			269,567
Conversion of convertible notes and securities	(319)	$ (92)	$ 1,511	(1,738)
Conversion of convertible notes and securities, shares		(91,669)	604,557
Common stock issued to pension plans assets	(3,297)		$ 408	(3,705)
Common stock issued to pension plans assets, shares			185,247
Change in WMLP ownership percentage				8,279			(8,279)
Change in par value of common stock from $2.50 to $0.01			$ (44,593)	44,593
Net loss allocated to noncontrolling interest	(208,767)					(203,314)	(5,453)
Other comprehensive income (loss)	(47,004)				(47,004)		0
Ending balance at Dec. 31, 2015	$ (601,884)	$ 0	$ 182	$ 240,721	$ (171,300)	$ (672,219)	$ 732
Ending balance, shares at Dec. 31, 2015		0	18,162,148