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Miscellaneous Financial Information (Unaudited), Shareholders (Details)
Dec. 31, 2014
shareholder
Common Stock [Member]  
Class of Stock [Line Items]  
Number of shareholders 5,404cnl_NumberOfShareholders
/ us-gaap_StatementClassOfStockAxis
= us-gaap_CommonStockMember
Preferred Stock [Member]  
Class of Stock [Line Items]  
Number of shareholders 0cnl_NumberOfShareholders
/ us-gaap_StatementClassOfStockAxis
= us-gaap_PreferredStockMember