Condensed Consolidating Statements of Cash Flows (Detail) (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Cash flows from operating activities:
Net income	$ 5,868	$ 18,112
Adjustments to reconcile net income (loss) to net cash (used in) provided by operating activities:
Depreciation and amortization	57,952	57,866
Amortization of debt issuance costs/discounts	4,654	5,164
Provision for doubtful accounts	1,828	1,046
(Gain) loss on sale of assets or stations	(898)	1,537
Loss on early extinguishment of debt	0	4,539
Fair value adjustment of derivative instruments	21	(2,871)
Deferred income taxes	3,155	(5,809)
Stock-based compensation expense	8,245	5,134
Earnings (loss) from consolidated subsidiaries	0	0
Changes in assets and liabilities	(39,320)	(27,944)
Net cash provided by operating activities	41,505	56,774
Cash flows from investing activities:
Proceeds from sale of assets or stations	14,069	692
Restricted cash	(240)	2,192
Proceeds from exchange of asset or stations		(52,066)
Capital expenditures	(11,248)	(4,830)
Net cash provided by (used in) investing activities	2,581	(54,012)
Cash flows from financing activities:
Intercompany transactions, net	0	0
Repayment of borrowings under term loans and revolving credit facilities	(66,125)	(38,931)
Proceeds from borrowings under term loans and revolving credit facilities	10,000	0
Tax withholding payments on behalf of employees	(1,320)	(337)
Preferred stock dividends	0	(5,304)
Proceeds from exercises of warrants	103	34
Proceeds from exercise of options	602	0
Deferred financing costs	(21)	(58)
Net cash used in financing activities	(56,761)	(44,596)
Decrease in cash and cash equivalents	(12,675)	(41,834)
Cash and cash equivalents at beginning of period	32,792	88,050
Cash and cash equivalents at end of period	20,117	46,216
Cumulus Media Inc. (Parent Guarantor)
Cash flows from operating activities:
Net income	5,868	18,112
Adjustments to reconcile net income (loss) to net cash (used in) provided by operating activities:
Depreciation and amortization	0	0
Amortization of debt issuance costs/discounts	0	0
Provision for doubtful accounts	0	0
(Gain) loss on sale of assets or stations	0	0
Loss on early extinguishment of debt		0
Fair value adjustment of derivative instruments	0	0
Deferred income taxes	(1,741)	0
Stock-based compensation expense	0	0
Earnings (loss) from consolidated subsidiaries	(9,108)	(22,801)
Changes in assets and liabilities	0	0
Net cash provided by operating activities	(4,981)	(4,689)
Cash flows from investing activities:
Proceeds from sale of assets or stations	0	0
Restricted cash	0	0
Proceeds from exchange of asset or stations		0
Capital expenditures	0	0
Net cash provided by (used in) investing activities	0	0
Cash flows from financing activities:
Intercompany transactions, net	(7,528)	(71,640)
Repayment of borrowings under term loans and revolving credit facilities	0	0
Proceeds from borrowings under term loans and revolving credit facilities	0
Tax withholding payments on behalf of employees	0	0
Preferred stock dividends		(5,304)
Proceeds from exercises of warrants	103	34
Proceeds from exercise of options	602
Deferred financing costs	0	0
Net cash used in financing activities	(6,823)	(76,910)
Decrease in cash and cash equivalents	(11,804)	(81,599)
Cash and cash equivalents at beginning of period	11,804	81,599
Cash and cash equivalents at end of period	0	0
Cumulus Media Holdings Inc. (Subsidiary Issuer)
Cash flows from operating activities:
Net income	9,108	22,801
Adjustments to reconcile net income (loss) to net cash (used in) provided by operating activities:
Depreciation and amortization	917	981
Amortization of debt issuance costs/discounts	4,558	5,164
Provision for doubtful accounts	0	0
(Gain) loss on sale of assets or stations	0	0
Loss on early extinguishment of debt		4,539
Fair value adjustment of derivative instruments	21	(27)
Deferred income taxes	(37,314)	0
Stock-based compensation expense	8,245	5,134
Earnings (loss) from consolidated subsidiaries	(78,523)	(134,111)
Changes in assets and liabilities	168,519	(39,763)
Net cash provided by operating activities	75,531	(135,282)
Cash flows from investing activities:
Proceeds from sale of assets or stations	0	0
Restricted cash	(240)	2,192
Proceeds from exchange of asset or stations		0
Capital expenditures	(86)	(112)
Net cash provided by (used in) investing activities	(326)	2,080
Cash flows from financing activities:
Intercompany transactions, net	(43,775)	218,252
Repayment of borrowings under term loans and revolving credit facilities	(31,125)	(38,931)
Proceeds from borrowings under term loans and revolving credit facilities	0
Tax withholding payments on behalf of employees	(1,320)	(337)
Preferred stock dividends		0
Proceeds from exercises of warrants	0	0
Proceeds from exercise of options	0
Deferred financing costs	(21)	(58)
Net cash used in financing activities	(76,241)	178,926
Decrease in cash and cash equivalents	(1,036)	45,724
Cash and cash equivalents at beginning of period	20,988	0
Cash and cash equivalents at end of period	19,952	45,724
Subsidiary Guarantors
Cash flows from operating activities:
Net income	78,523	134,111
Adjustments to reconcile net income (loss) to net cash (used in) provided by operating activities:
Depreciation and amortization	57,035	56,885
Amortization of debt issuance costs/discounts	0	0
Provision for doubtful accounts	1,828	1,046
(Gain) loss on sale of assets or stations	(898)	1,537
Loss on early extinguishment of debt		0
Fair value adjustment of derivative instruments	0	(2,844)
Deferred income taxes	42,669	(14,248)
Stock-based compensation expense	0	0
Earnings (loss) from consolidated subsidiaries	853	9,453
Changes in assets and liabilities	(199,055)	10,805
Net cash provided by operating activities	(19,045)	196,745
Cash flows from investing activities:
Proceeds from sale of assets or stations	14,069	692
Restricted cash	0	0
Proceeds from exchange of asset or stations		(52,066)
Capital expenditures	(11,162)	(4,718)
Net cash provided by (used in) investing activities	2,907	(56,092)
Cash flows from financing activities:
Intercompany transactions, net	16,303	(146,612)
Repayment of borrowings under term loans and revolving credit facilities	0	0
Proceeds from borrowings under term loans and revolving credit facilities	0
Tax withholding payments on behalf of employees	0	0
Preferred stock dividends		0
Proceeds from exercises of warrants	0	0
Proceeds from exercise of options	0
Deferred financing costs	0	0
Net cash used in financing activities	16,303	(146,612)
Decrease in cash and cash equivalents	165	(5,959)
Cash and cash equivalents at beginning of period	0	6,451
Cash and cash equivalents at end of period	165	492
Subsidiary Non-guarantors
Cash flows from operating activities:
Net income	(853)	(9,453)
Adjustments to reconcile net income (loss) to net cash (used in) provided by operating activities:
Depreciation and amortization	0	0
Amortization of debt issuance costs/discounts	96	0
Provision for doubtful accounts	0	0
(Gain) loss on sale of assets or stations	0	0
Loss on early extinguishment of debt		0
Fair value adjustment of derivative instruments	0	0
Deferred income taxes	(459)	8,439
Stock-based compensation expense	0	0
Earnings (loss) from consolidated subsidiaries	0	0
Changes in assets and liabilities	(8,784)	1,014
Net cash provided by operating activities	(10,000)	0
Cash flows from investing activities:
Proceeds from sale of assets or stations	0	0
Restricted cash	0	0
Proceeds from exchange of asset or stations		0
Capital expenditures	0	0
Net cash provided by (used in) investing activities	0	0
Cash flows from financing activities:
Intercompany transactions, net	35,000	0
Repayment of borrowings under term loans and revolving credit facilities	(35,000)	0
Proceeds from borrowings under term loans and revolving credit facilities	10,000
Tax withholding payments on behalf of employees	0	0
Preferred stock dividends		0
Proceeds from exercises of warrants	0	0
Proceeds from exercise of options	0
Deferred financing costs	0	0
Net cash used in financing activities	10,000	0
Decrease in cash and cash equivalents	0	0
Cash and cash equivalents at beginning of period	0	0
Cash and cash equivalents at end of period	0	0
Eliminations
Cash flows from operating activities:
Net income	(86,778)	(147,459)
Adjustments to reconcile net income (loss) to net cash (used in) provided by operating activities:
Depreciation and amortization	0	0
Amortization of debt issuance costs/discounts	0	0
Provision for doubtful accounts	0	0
(Gain) loss on sale of assets or stations	0	0
Loss on early extinguishment of debt		0
Fair value adjustment of derivative instruments	0	0
Deferred income taxes	0	0
Stock-based compensation expense	0	0
Earnings (loss) from consolidated subsidiaries	86,778	147,459
Changes in assets and liabilities	0	0
Net cash provided by operating activities	0	0
Cash flows from investing activities:
Proceeds from sale of assets or stations	0	0
Restricted cash	0	0
Proceeds from exchange of asset or stations		0
Capital expenditures	0	0
Net cash provided by (used in) investing activities	0	0
Cash flows from financing activities:
Intercompany transactions, net	0	0
Repayment of borrowings under term loans and revolving credit facilities	0	0
Proceeds from borrowings under term loans and revolving credit facilities	0
Tax withholding payments on behalf of employees	0	0
Preferred stock dividends		0
Proceeds from exercises of warrants	0	0
Proceeds from exercise of options	0
Deferred financing costs	0	0
Net cash used in financing activities	0	0
Decrease in cash and cash equivalents	0	0
Cash and cash equivalents at beginning of period	0	0
Cash and cash equivalents at end of period	$ 0	$ 0