CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (USD $) In Thousands	Total	Common Stock	Treasury Stock	Additional Paid-In Capital	Accumulated Deficit	Accumulated Other Comprehensive Income (AOCI)	Non- Controlling Interest
Beginning balance at Dec. 31, 2012	$ 339,032	$ 42	$ (28,973)	$ 3,549,533	$ (3,254,744)	$ 40	$ 73,134
Beginning balance (in shares) at Dec. 31, 2012		42,155	(4,211)
Equity-based compensation expense related to stock appreciation rights (SARs) and stock options	601			601
Equity-based compensation related to deferred stock units (DSUs)	90			90
Equity-based compensation related to restricted stock (RS)	1,189			1,189
Issuance of DSUs	70			70
Issuance of DSUs, shares		37
Issuance of RS, net of forfeitures and surrenders	(95)			(95)
Issuance of RS, net of forfeitures and surrenders, shares		153
Exercise of SARs and stock options, net of surrenders	(231)			(231)
Exercise of SARs and stock options, net of surrenders, shares		37
Impact of redeemable noncontrolling interest accretion	(280)			(280)
Impact of sale of consolidated subsidiaries	(28,144)						(28,144)
Impact of subsidiary equity transactions	1,336			1,247			89
Repurchase of ICGE Common Stock	(2,114)		(2,114)
Repurchase of ICGE Common Stock, shares			(162)
Net unrealized appreciation in marketable securities and reclassification adjustments	(109)					(109)
Noncontrolling owners share of AOCI of consolidated subsidiaries						105	(105)
Net income (loss)	15,537				19,068		(3,531)
Ending balance at Mar. 31, 2013	326,882	42	(31,087)	3,552,124	(3,235,676)	36	41,443
Ending balance (in shares) at Mar. 31, 2013		42,382	(4,373)
Beginning balance at Dec. 31, 2013	473,678	43	(40,998)	3,536,761	(3,045,685)	40	23,517
Beginning balance (in shares) at Dec. 31, 2013		43,333	(5,118)
Equity-based compensation expense related to stock appreciation rights (SARs) and stock options	250			250
Equity-based compensation related to deferred stock units (DSUs)	146			146
Equity-based compensation related to restricted stock (RS)	3,293			3,293
Issuance of DSUs	100			100
Issuance of DSUs, shares		29
Issuance of RS, net of forfeitures and surrenders	(934)	3		(937)
Issuance of RS, net of forfeitures and surrenders, shares		2,683
Exercise of SARs and stock options, net of surrenders	(1,270)			(1,270)
Exercise of SARs and stock options, net of surrenders, shares		120
Impact of redeemable noncontrolling interest accretion	(594)			(594)
Impact of subsidiary equity transactions	(132)			159			(291)
Net income (loss)	(11,065)				(10,150)		(915)
Ending balance at Mar. 31, 2014	$ 463,472	$ 46	$ (40,998)	$ 3,537,908	$ (3,055,835)	$ 40	$ 22,311
Ending balance (in shares) at Mar. 31, 2014		46,165	5,118