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Series B Preferred Stock Exchange (Details) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended
Apr. 23, 2018
Feb. 18, 2015
Sep. 30, 2010
Mar. 31, 2018
Dec. 31, 2017
Debt Instrument [Line Items]          
Common stock shares outstanding       49,386,806 49,251,336
Series B redeemable preferred stock       $ 19,297 $ 18,921
Pending Litigation [Member] | Bonanno vs. VTBH [Member]          
Debt Instrument [Line Items]          
Loss Contingency, Damages Sought, Value   $ 15,100      
Series B Redeemable Preferred Stock          
Debt Instrument [Line Items]          
Share-based Compensation Arrangement by Share-based Payment Award, Shares Issued in Period     1,000,000    
Mandatorily Redeemable Preferred Stock, Fair Value Disclosure     $ 12,400    
Preferred Stock, Par or Stated Value Per Share       $ 12.425371  
Subsequent Event [Member] | Pending Litigation [Member] | Bonanno vs. VTBH [Member]          
Debt Instrument [Line Items]          
Payments for Legal Settlements $ 1,000        
Contingent Legal Settlements $ 1,250        
Common stock          
Debt Instrument [Line Items]          
Common stock shares outstanding 1,307,143        
Warrant [Member]          
Debt Instrument [Line Items]          
Common stock shares outstanding 550,000