Annual report pursuant to Section 13 and 15(d)

Income Taxes (Narrative) (Details)

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Income Taxes (Narrative) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Valuation Allowance [Line Items]      
Income tax (benefit) expense $ (6,502) $ 10,025 $ (482)
Deferred tax liability, remeasurement of indefinite lived intangibles and goodwill due to Tax Cuts and Jobs Act of 2017 3,364    
Valuation allowance increase (decrease) 4,837    
Deferred income tax expense (benefit) (7,673) 9,096 (400)
Current income tax expense (benefit) $ 1,171 929 (160)
Cumulative loss period 3 years    
Deferred tax liabilities $ 2,968 10,642  
Increase (decrease) in valuation allowance due to TCJA (8,200)    
Increase (decrease) in valuation allowance due to realization of deferred tax assets (11,200)    
Penalties and interest accrued   181  
Federal      
Valuation Allowance [Line Items]      
Income tax (benefit) expense (7,331) 8,992 (3,114)
Net operating loss carryforwards 29,756    
State and Local      
Valuation Allowance [Line Items]      
Income tax (benefit) expense 829 $ 1,033 $ 2,632
State and Local | Florida      
Valuation Allowance [Line Items]      
Net operating loss carryforwards 22,731    
State and Local | New York      
Valuation Allowance [Line Items]      
Net operating loss carryforwards 41,580    
State and Local | New York City      
Valuation Allowance [Line Items]      
Net operating loss carryforwards 42,007    
Current year intangible assets amortization      
Valuation Allowance [Line Items]      
Deferred income tax expense (benefit) 937    
Deferred tax liabilities 7,415    
Alternative Minimum Tax credit carryforwards      
Valuation Allowance [Line Items]      
Deferred income tax expense (benefit) (411)    
Deferred tax assets 411    
Subsidiaries filing in separate state jurisdictions      
Valuation Allowance [Line Items]      
Deferred tax liabilities 801    
Existing tax assets expected to have an indefinite life due to TCJA      
Valuation Allowance [Line Items]      
Deferred tax assets 4,837    
Accounting Standards Update 2016-09      
Valuation Allowance [Line Items]      
Income tax (benefit) expense $ 3,000