Acquisitions (Details Textual) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended
	Mar. 31, 2014	Dec. 31, 2013
Business Acquisition [Line Items]
Noncontrolling Interest, Ownership Percentage by Parent	100.00%
Business Acquisition, Pro Forma Net Income (Loss)	$ 724
Business Acquisition, Pro Forma Revenue	5,662
Aggregate Year to Date Acquisitions [Member]
Business Acquisition [Line Items]
Business Acquisition, Cost of Acquired Entity, Purchase Price	95,890	38,202
Business Acquisition, Cost of Acquired Entity, Cash Paid	41,315	12,000
Business Acquisition, Deferred Acquisition Consideration	54,575	26,202
Business Acquisition, Purchase Price Allocation, Amortizable Intangible Assets	22,998	10,835
Business Acquisition, Purchase Price Allocation, Goodwill Amount	132,478	35,956
Redeemable Noncontrolling Interest, Equity, Carrying Amount	61,516	11,090
Business Acquisition Purchase Price Allocation Intangibles and Goodwill Expected Tax Deductible Amount	$ 57,880	$ 46,791
Aggregate Year to Date Acquisitions [Member] | Luntz Global Partners L L C [Member]
Business Acquisition [Line Items]
Business Combination, Step Acquisition, Equity Interest in Acquiree, Percentage	60.00%
Aggregate Year to Date Acquisitions [Member] | Kingsdale Partners LP [Member]
Business Acquisition [Line Items]
Business Combination, Step Acquisition, Equity Interest in Acquiree, Percentage	65.00%
Aggregate Year to Date Acquisitions [Member] | Local Biz Now LLC [Member]
Business Acquisition [Line Items]
Business Combination, Step Acquisition, Equity Interest in Acquiree, Percentage		70.00%