CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (USD $) In Thousands, except Share data	Total	Common Stock	Treasury Stock at Cost	Additional Paid-In Capital	Accumulated Deficit	Accumulated Other Comprehensive Income (AOCI)	Non- Controlling Interest
Beginning Balance at Dec. 31, 2011	$ 253,497	$ 41	$ (20,619)	$ 3,544,121	$ (3,277,733)	$ 74	$ 7,613
Beginning balance (in shares) at Dec. 31, 2011		40,729,000	(3,281,000)
Equity-based compensation expense related to stock appreciation rights (SARs) and stock options	1,226			1,226
Equity-based compensation expense related to deferred stock units (DSUs)	246			246
Equity-based compensation expense related to restricted stock (RS)	1,599			1,599
Issuance of DSUs, shares		76,000
Issuance of DSUs	135			135
Issuance of RS, net of forfeitures and surrenders, shares		77,000
Issuance of RS, net of forfeitures and surrenders	(188)			(188)
Exercise of SARs and stock options, net of surrenders, shares	30,500	31,000
Exercise of SARs and stock options, net of surrenders	252			252
Impact of redeemable noncontrolling interest accretion	(211)			(211)
Impact of subsidiary equity transactions	(794)			(1,918)			1,124
Repurchase of common stock, shares			(468,000)
Repurchase of common stock	(4,114)		(4,114)
Net unrealized appreciation in marketable securities and reclassification adjustments	119					119
Noncontrolling owners share of AOCI of consolidated subsidiary						9	(9)
Net income (loss)	(12,119)				(13,014)		895
Ending Balance at Jun. 30, 2012	239,648	41	(24,733)	3,545,262	(3,290,747)	202	9,623
Ending balance (in shares) at Jun. 30, 2012		40,913,000	(3,749,000)
Beginning Balance at Dec. 31, 2012	339,854	42	(28,973)	3,550,355	(3,254,744)	40	73,134
Beginning balance (in shares) at Dec. 31, 2012		42,155,000	(4,211,000)
Equity-based compensation expense related to stock appreciation rights (SARs) and stock options	1,202			1,202
Equity-based compensation expense related to deferred stock units (DSUs)	186			186
Equity-based compensation expense related to restricted stock (RS)	2,426			2,426
Issuance of DSUs, shares		45,000
Issuance of DSUs	166			166
Issuance of RS, net of forfeitures and surrenders, shares		132,000
Issuance of RS, net of forfeitures and surrenders	(297)			(297)
Exercise of SARs and stock options, net of surrenders, shares		44,000
Exercise of SARs and stock options, net of surrenders	(267)			(267)
Impact of redeemable noncontrolling interest accretion	(570)			(570)
Impact of sale of consolidated subsidiaries	(28,144)						(28,144)
Impact of subsidiary equity transactions	1,526			1,477			49
Repurchase of common stock, shares			(642,000)
Repurchase of common stock	(7,436)		(7,436)
Noncontrolling owners share of AOCI of consolidated subsidiary						50	(50)
Net income (loss)	8,268				12,210		(3,942)
Ending Balance at Jun. 30, 2013	$ 316,914	$ 42	$ (36,409)	$ 3,554,678	$ (3,242,534)	$ 90	$ 41,047
Ending balance (in shares) at Jun. 30, 2013		42,376,000	(4,853,000)