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Summary Of Significant Accounting Policies (Details Textual) (USD $)
 0 Months Ended 3 Months Ended 12 Months Ended
Jun. 15, 2012
Mar. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Sep. 30, 2014
Accounting Policies [Line Items]            
Asset Impairment Charges   $ 600,000us-gaap_AssetImpairmentCharges $ 3,475,000us-gaap_AssetImpairmentCharges $ 0us-gaap_AssetImpairmentCharges $ 834,000us-gaap_AssetImpairmentCharges  
Credit Card Receivables     1,700,000us-gaap_CreditCardReceivables      
Noncontrolling Interest, Ownership Percentage by Parent     10.00%us-gaap_MinorityInterestOwnershipPercentageByParent 80.90%us-gaap_MinorityInterestOwnershipPercentageByParent   10.00%us-gaap_MinorityInterestOwnershipPercentageByParent
Stock split 2us-gaap_StockholdersEquityNoteStockSplitConversionRatio1   2us-gaap_StockholdersEquityNoteStockSplitConversionRatio1      
Available-for-sale Securities     26,912,000us-gaap_AvailableForSaleSecurities 9,055,000us-gaap_AvailableForSaleSecurities    
Letters of Credit Outstanding, Amount     1,100,000us-gaap_LettersOfCreditOutstandingAmount      
Depreciation     8,100,000us-gaap_Depreciation 9,300,000us-gaap_Depreciation 9,500,000us-gaap_Depreciation  
Sales Commissions and Fees     6,100,000us-gaap_SalesCommissionsAndFees 6,600,000us-gaap_SalesCommissionsAndFees 6,500,000us-gaap_SalesCommissionsAndFees  
Advertising Expense     47,000,000us-gaap_AdvertisingExpense 64,800,000us-gaap_AdvertisingExpense 66,500,000us-gaap_AdvertisingExpense  
Prepaid Advertising     7,900,000us-gaap_PrepaidAdvertising 8,500,000us-gaap_PrepaidAdvertising    
Certificates of Deposit [Member]            
Accounting Policies [Line Items]            
Available-for-sale Securities     $ 1,101,000us-gaap_AvailableForSaleSecurities
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_CertificatesOfDepositMember		 $ 1,070,000us-gaap_AvailableForSaleSecurities
/ us-gaap_MajorTypesOfDebtAndEquitySecuritiesAxis
= us-gaap_CertificatesOfDepositMember