CONDENSED CONSOLIDATING FINANCIAL STATEMENTS - Condensed Consolidating Unaudited Statements of Operations (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Schedule of Condensed Consolidating Statement of Operations [Line Items]
REVENUES	$ 365,798	$ 389,673	$ 1,072,534	$ 1,229,512
Direct operating expense	272,112	268,297	793,297	854,581
Depreciation and amortization expense	50,924	56,962	154,203	169,363
General and administrative expense	65,224	52,665	175,971	173,646
Impairment expense	60,792	0	89,479	0
Operating income (loss)	(83,254)	11,749	(140,416)	31,922
Interest expense, net of amounts capitalized	13,417	13,814	40,397	41,602
Other expense (income), net	348	(85)	(2,454)	(878)
Income tax expense (benefit)	34,790	(2,717)	52,035	147
Loss before income taxes	(97,019)	(1,980)	(178,359)	(8,802)
Net loss	(62,229)	(4,697)	(126,324)	(8,655)
Income attributable to noncontrolling interest	0	151	0	595
LOSS ATTRIBUTABLE TO KEY	(62,229)	(4,848)	(126,324)	(9,250)
Parent Company
Schedule of Condensed Consolidating Statement of Operations [Line Items]
REVENUES	0	0	0	0
Direct operating expense	0	0	0	0
Depreciation and amortization expense	0	0	0	0
General and administrative expense	231	282	709	798
Impairment expense	0		0
Operating income (loss)	(231)	(282)	(709)	(798)
Interest expense, net of amounts capitalized	13,415	13,992	40,369	42,007
Other expense (income), net	(430)	(936)	(1,719)	(2,745)
Income tax expense (benefit)	32,158	(5,973)	43,141	(8,356)
Loss before income taxes	(13,216)	(13,338)	(39,359)	(40,060)
Net loss	18,942	(19,311)	3,782	(48,416)
Income attributable to noncontrolling interest	0	0	0	0
LOSS ATTRIBUTABLE TO KEY	18,942	(19,311)	3,782	(48,416)
Guarantor Subsidiaries
Schedule of Condensed Consolidating Statement of Operations [Line Items]
REVENUES	340,496	362,733	997,806	1,157,964
Direct operating expense	252,747	248,712	734,672	807,942
Depreciation and amortization expense	47,451	53,758	143,916	161,348
General and administrative expense	62,660	48,437	167,714	158,801
Impairment expense	60,792		60,792
Operating income (loss)	(83,154)	11,826	(109,288)	29,873
Interest expense, net of amounts capitalized	0	(177)	(1)	(468)
Other expense (income), net	(18)	255	(1,314)	(991)
Income tax expense (benefit)	2,301	2,961	8,144	8,232
Loss before income taxes	(83,136)	11,748	(107,973)	31,332
Net loss	(80,835)	14,709	(99,829)	39,564
Income attributable to noncontrolling interest	0	0	0	0
LOSS ATTRIBUTABLE TO KEY	(80,835)	14,709	(99,829)	39,564
Non-Guarantor Subsidiaries
Schedule of Condensed Consolidating Statement of Operations [Line Items]
REVENUES	30,163	36,264	93,716	124,561
Direct operating expense	21,115	26,121	66,798	89,241
Depreciation and amortization expense	3,473	3,204	10,287	8,015
General and administrative expense	5,391	6,906	18,347	25,207
Impairment expense	0		28,687
Operating income (loss)	184	33	(30,403)	2,098
Interest expense, net of amounts capitalized	2	(1)	29	63
Other expense (income), net	798	(351)	550	387
Income tax expense (benefit)	331	295	750	271
Loss before income taxes	(616)	385	(30,982)	1,648
Net loss	(285)	680	(30,232)	1,919
Income attributable to noncontrolling interest	0	151	0	595
LOSS ATTRIBUTABLE TO KEY	(285)	529	(30,232)	1,324
Eliminations
Schedule of Condensed Consolidating Statement of Operations [Line Items]
REVENUES	(4,861)	(9,324)	(18,988)	(53,013)
Direct operating expense	(1,750)	(6,536)	(8,173)	(42,602)
Depreciation and amortization expense	0	0	0	0
General and administrative expense	(3,058)	(2,960)	(10,799)	(11,160)
Impairment expense	0		0
Operating income (loss)	(53)	172	(16)	749
Interest expense, net of amounts capitalized	0	0	0	0
Other expense (income), net	(2)	947	29	2,471
Income tax expense (benefit)	0	0	0	0
Loss before income taxes	(51)	(775)	(45)	(1,722)
Net loss	(51)	(775)	(45)	(1,722)
Income attributable to noncontrolling interest	0	0	0	0
LOSS ATTRIBUTABLE TO KEY	$ (51)	$ (775)	$ (45)	$ (1,722)