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Long-Term Investments (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2016
Mar. 31, 2015
Dec. 31, 2015
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Investments accounted for under the equity method $ 19,539   $ 21,495
Long-term investments 59,488   62,726
Equity income (loss) from real estate ventures (507) $ 338  
Reinsurance Company [Member]      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Contributions to acquire interest   5,000  
Indian Creek Investors LP [Member]      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Investments accounted for under the equity method $ 3,780   4,989
Ownership percentage 20.17%    
Boyar Value Fund [Member]      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Investments accounted for under the equity method $ 7,286   7,302
Ownership percentage 30.36%    
Ladenburg Thalmann Financial Services [Member]      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Investments accounted for under the equity method $ 8,473   9,204
Ownership percentage 7.76%    
Quoted market value $ 35,478    
Castle Brands [Member]      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Investments accounted for under the equity method $ 0   0
Ownership percentage 7.92%    
Quoted market value $ 11,911    
Equity Method Investments [Member]      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Distributions of equity method investment 285 1,433  
Equity income (loss) from real estate ventures (1,671) $ 612  
Carrying Value      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Investments accounted at cost 39,949   41,231
Fair Value      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Cost method investments, fair value disclosure 41,891   44,769
Real estate partnership | Carrying Value | Fair Value, Measurements, Recurring      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Investments accounted at cost 501   501
Real estate partnership | Fair Value | Fair Value, Measurements, Recurring      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Cost method investments, fair value disclosure 505   552
Long-term investments      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Investments accounted at cost 39,949   41,231
Long-term investments | Carrying Value | Fair Value, Measurements, Recurring      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Investments accounted at cost 39,448   40,730
Long-term investments | Fair Value | Fair Value, Measurements, Recurring      
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]      
Cost method investments, fair value disclosure $ 41,386   $ 44,217