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 (As Reported [Member]) at Dec. 31, 2013	$ (187,879)	$ 160	$ 36,479	$ 134,861	$ (63,595)	$ (295,784)	$ 0
Beginning balance (Adjustments [Member]) at Dec. 31, 2013	(48,240)				(4,087)	(44,153)
Beginning balance at Dec. 31, 2013	(236,119)	$ 160	$ 36,479	134,861	(67,682)	(339,937)	0
Beginning balance, shares (As Reported [Member]) at Dec. 31, 2013		159,960	14,592,231
Beginning 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
Assumption of noncontrolling interest of subsidiary	10,774						10,774
Changes in WMLP ownership interest, net				(5,408)			5,408
Net loss | As Reported [Member]	(173,180)
Net loss | Adjustments [Member]	(3,566)
Net loss	(176,746)					(175,825)
Less net loss attributable to noncontrolling interest | As Reported [Member]	(921)
Less net loss attributable to noncontrolling interest | Adjustments [Member]	0
Less net loss attributable to noncontrolling interest	(921)						(921)
Other comprehensive loss | As Reported [Member]	(60,701)
Other comprehensive loss | Adjustments [Member]	376
Other comprehensive loss	(60,325)				(60,325)
Ending balance at Dec. 31, 2014	(400,875)	$ 92	$ 42,756	185,644	(128,007)	(516,621)	15,261
Ending balance, shares at Dec. 31, 2014		91,669	17,102,777
Net loss | As Reported [Member]	(13,878)
Net loss | Adjustments [Member]	(2,146)
Net loss	(16,024)
Less net loss attributable to noncontrolling interest | As Reported [Member]	(2,146)
Less net loss attributable to noncontrolling interest | Adjustments [Member]	0
Less net loss attributable to noncontrolling interest	(2,146)
Other comprehensive loss | As Reported [Member]	(25,750)
Other comprehensive loss | Adjustments [Member]	81
Other comprehensive loss	(25,669)
Ending balance (As Reported [Member]) at Mar. 31, 2015	(388,672)
Ending balance (Adjustments [Member]) at Mar. 31, 2015	(53,528)
Ending balance at Mar. 31, 2015	(442,200)
Beginning balance at Dec. 31, 2014	(400,875)	$ 92	$ 42,756	185,644	(128,007)	(516,621)	15,261
Beginning balance, shares at Dec. 31, 2014		91,669	17,102,777
Net loss | As Reported [Member]	(51,729)
Net loss | Adjustments [Member]	(3,709)
Net loss	(55,438)
Less net loss attributable to noncontrolling interest | As Reported [Member]	(3,392)
Less net loss attributable to noncontrolling interest | Adjustments [Member]	0
Less net loss attributable to noncontrolling interest	(3,392)
Other comprehensive loss | As Reported [Member]	(21,390)
Other comprehensive loss | Adjustments [Member]	(187)
Other comprehensive loss	(21,577)
Ending balance (As Reported [Member]) at Jun. 30, 2015	(422,791)
Ending balance (Adjustments [Member]) at Jun. 30, 2015	(55,352)
Ending balance at Jun. 30, 2015	(478,143)
Beginning balance at Dec. 31, 2014	(400,875)	$ 92	$ 42,756	185,644	(128,007)	(516,621)	15,261
Beginning balance, shares at Dec. 31, 2014		91,669	17,102,777
Net loss | As Reported [Member]	(99,749)
Net loss | Adjustments [Member]	(8,565)
Net loss	(108,314)
Less net loss attributable to noncontrolling interest | As Reported [Member]	(4,850)
Less net loss attributable to noncontrolling interest | Adjustments [Member]	0
Less net loss attributable to noncontrolling interest	(4,850)
Other comprehensive loss | As Reported [Member]	(41,515)
Other comprehensive loss | Adjustments [Member]	(75)
Other comprehensive loss	(41,590)
Ending balance (As Reported [Member]) at Sep. 30, 2015	(489,216)
Ending balance (Adjustments [Member]) at Sep. 30, 2015	(60,104)
Ending balance at Sep. 30, 2015	(549,320)
Beginning balance at Dec. 31, 2014	(400,875)	$ 92	$ 42,756	185,644	(128,007)	(516,621)	15,261
Beginning 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
Issuance of restricted stock	(3,297)		$ 408	(3,705)
Issuance of restricted stock, 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 | As Reported [Member]	(208,767)
Net loss | Adjustments [Member]	(10,328)
Net loss	(219,095)					(213,642)
Less net loss attributable to noncontrolling interest | As Reported [Member]	(5,453)
Less net loss attributable to noncontrolling interest | Adjustments [Member]	0
Less net loss attributable to noncontrolling interest	(5,453)						(5,453)
Other comprehensive loss | As Reported [Member]	(47,004)
Other comprehensive loss | Adjustments [Member]	741
Other comprehensive loss	(46,263)				(46,263)		0
Ending balance (As Reported [Member]) at Dec. 31, 2015	(601,884)
Ending balance (Adjustments [Member]) at Dec. 31, 2015	(61,017)
Ending balance at Dec. 31, 2015	(662,901)	$ 0	$ 182	240,721	(174,270)	(730,266)	732
Ending balance, shares at Dec. 31, 2015		0	18,162,148
Beginning balance (As Reported [Member]) at Mar. 31, 2015	(388,672)
Beginning balance (Adjustments [Member]) at Mar. 31, 2015	(53,528)
Beginning balance at Mar. 31, 2015	(442,200)
Net loss | As Reported [Member]	(37,851)
Net loss | Adjustments [Member]	(1,564)
Net loss	(39,415)
Less net loss attributable to noncontrolling interest | As Reported [Member]	(1,246)
Less net loss attributable to noncontrolling interest | Adjustments [Member]	0
Less net loss attributable to noncontrolling interest	(1,246)
Other comprehensive loss | As Reported [Member]	4,360
Other comprehensive loss | Adjustments [Member]	(268)
Other comprehensive loss	4,092
Ending balance (As Reported [Member]) at Jun. 30, 2015	(422,791)
Ending balance (Adjustments [Member]) at Jun. 30, 2015	(55,352)
Ending balance at Jun. 30, 2015	(478,143)
Net loss | As Reported [Member]	(48,020)
Net loss | Adjustments [Member]	(4,856)
Net loss	(52,876)
Less net loss attributable to noncontrolling interest | As Reported [Member]	(1,458)
Less net loss attributable to noncontrolling interest	(1,458)
Other comprehensive loss | As Reported [Member]	(20,125)
Other comprehensive loss | Adjustments [Member]	112
Other comprehensive loss	(20,013)
Ending balance (As Reported [Member]) at Sep. 30, 2015	(489,216)
Ending balance (Adjustments [Member]) at Sep. 30, 2015	(60,104)
Ending balance at Sep. 30, 2015	(549,320)
Beginning balance (As Reported [Member]) at Dec. 31, 2015	(601,884)
Beginning balance (Adjustments [Member]) at Dec. 31, 2015	(61,017)
Beginning balance at Dec. 31, 2015	(662,901)	$ 0	$ 182	240,721	(174,270)	(730,266)	732
Net loss | As Reported [Member]	30,086
Net loss | Adjustments [Member]	(3,177)
Net loss	26,909
Less net loss attributable to noncontrolling interest | As Reported [Member]	(498)
Less net loss attributable to noncontrolling interest | Adjustments [Member]	0
Less net loss attributable to noncontrolling interest	(498)
Other comprehensive loss | As Reported [Member]	19,403
Other comprehensive loss | Adjustments [Member]	(309)
Other comprehensive loss	19,094
Ending balance (As Reported [Member]) at Mar. 31, 2016	(550,081)
Ending balance (Adjustments [Member]) at Mar. 31, 2016	(64,448)
Ending balance at Mar. 31, 2016	(614,529)
Beginning balance (As Reported [Member]) at Dec. 31, 2015	(601,884)
Beginning balance (Adjustments [Member]) at Dec. 31, 2015	(61,017)
Beginning balance at Dec. 31, 2015	(662,901)	$ 0	$ 182	240,721	(174,270)	(730,266)	732
Beginning balance, shares at Dec. 31, 2015		0	18,162,148
Net loss | As Reported [Member]	3,911
Net loss | Adjustments [Member]	(6,399)
Net loss	(2,488)
Less net loss attributable to noncontrolling interest | As Reported [Member]	(1,306)
Less net loss attributable to noncontrolling interest | Adjustments [Member]	0
Less net loss attributable to noncontrolling interest	(1,306)
Other comprehensive loss | As Reported [Member]	21,041
Other comprehensive loss | Adjustments [Member]	(307)
Other comprehensive loss	20,734
Ending balance (As Reported [Member]) at Jun. 30, 2016	(573,113)
Ending balance (Adjustments [Member]) at Jun. 30, 2016	(67,671)
Ending balance at Jun. 30, 2016	(640,784)
Beginning balance (As Reported [Member]) at Dec. 31, 2015	(601,884)
Beginning balance (Adjustments [Member]) at Dec. 31, 2015	(61,017)
Beginning balance at Dec. 31, 2015	(662,901)	$ 0	$ 182	240,721	(174,270)	(730,266)	732
Beginning balance, shares at Dec. 31, 2015		0	18,162,148
Net loss | As Reported [Member]	(4,849)
Net loss | Adjustments [Member]	(16,246)
Net loss	(21,095)
Less net loss attributable to noncontrolling interest | As Reported [Member]	(1,545)
Less net loss attributable to noncontrolling interest | Adjustments [Member]	0
Less net loss attributable to noncontrolling interest	(1,545)
Other comprehensive loss | As Reported [Member]	20,574
Other comprehensive loss | Adjustments [Member]	(301)
Other comprehensive loss	20,273
Ending balance (As Reported [Member]) at Sep. 30, 2016	(581,208)
Ending balance (Adjustments [Member]) at Sep. 30, 2016	(77,519)
Ending balance at Sep. 30, 2016	(658,727)
Beginning balance (As Reported [Member]) at Dec. 31, 2015	(601,884)
Beginning balance (Adjustments [Member]) at Dec. 31, 2015	(61,017)
Beginning balance at Dec. 31, 2015	(662,901)	$ 0	$ 182	240,721	(174,270)	(730,266)	732
Beginning balance, shares at Dec. 31, 2015		0	18,162,148
WMLP distributions	(972)						(972)
Common stock issued as compensation	7,584		$ 3	7,581
Common stock issued as compensation, shares			342,353
Issuance of restricted stock	(158)		$ 1	(159)
Issuance of restricted stock, shares			66,141
Net loss	(28,872)					(27,101)
Less net loss attributable to noncontrolling interest	(1,771)						(1,771)
Other comprehensive loss	(4,798)				(4,802)		4
Ending balance at Dec. 31, 2016	(690,117)	$ 0	$ 186	$ 248,143	$ (179,072)	$ (757,367)	$ (2,007)
Ending balance, shares at Dec. 31, 2016		0	18,570,642
Beginning balance (As Reported [Member]) at Mar. 31, 2016	(550,081)
Beginning balance (Adjustments [Member]) at Mar. 31, 2016	(64,448)
Beginning balance at Mar. 31, 2016	(614,529)
Net loss | As Reported [Member]	(26,175)
Net loss | Adjustments [Member]	(3,222)
Net loss	(29,397)
Less net loss attributable to noncontrolling interest | As Reported [Member]	(808)
Less net loss attributable to noncontrolling interest | Adjustments [Member]	0
Less net loss attributable to noncontrolling interest	(808)
Other comprehensive loss | As Reported [Member]	1,638
Other comprehensive loss | Adjustments [Member]	2
Other comprehensive loss	1,640
Ending balance (As Reported [Member]) at Jun. 30, 2016	(573,113)
Ending balance (Adjustments [Member]) at Jun. 30, 2016	(67,671)
Ending balance at Jun. 30, 2016	(640,784)
Net loss | As Reported [Member]	(8,760)
Net loss | Adjustments [Member]	(9,847)
Net loss	(18,607)
Less net loss attributable to noncontrolling interest | As Reported [Member]	(239)
Less net loss attributable to noncontrolling interest	(239)
Other comprehensive loss | As Reported [Member]	(467)
Other comprehensive loss | Adjustments [Member]	6
Other comprehensive loss	(461)
Ending balance (As Reported [Member]) at Sep. 30, 2016	(581,208)
Ending balance (Adjustments [Member]) at Sep. 30, 2016	(77,519)
Ending balance at Sep. 30, 2016	$ (658,727)