Annual report pursuant to Section 13 and 15(d)

Notes Payable (NFS Forgivable Loans) (Details)

v3.6.0.2
Notes Payable (NFS Forgivable Loans) (Details)
12 Months Ended
Nov. 04, 2015
USD ($)
Nov. 04, 2011
USD ($)
installment
Dec. 31, 2016
USD ($)
Dec. 31, 2015
USD ($)
Dec. 31, 2014
USD ($)
Nov. 30, 2015
USD ($)
Revolving Credit Facility            
Debt Instrument [Line Items]            
Amount outstanding     $ 0 $ 0    
NFS Forgivable Loans            
Debt Instrument [Line Items]            
Term   7 years        
Loans payable   $ 15,000,000        
Number of installments | installment   7        
Annual installment   $ 2,143,000        
Forgiveness, principal     2,143,000 2,143,000 $ 2,143,000  
Forgiveness, interest     408,000 $ 525,000 652,000  
Secured loan securities value     21,708,000      
NFS Forgivable Loans, Amended            
Debt Instrument [Line Items]            
Loans payable   $ 7,143,000       $ 0
Forgiveness, principal $ 1,786,000       1,786,000  
Forgiveness, interest $ 94,000       $ 187,000  
Number of installments | installment   4        
Frost Gamma Investment Trust | Revolving Credit Facility            
Debt Instrument [Line Items]            
Amount outstanding     $ 40,000,000      
Minimum | NFS Forgivable Loans            
Debt Instrument [Line Items]            
Effective percentage   6.00%        
Maximum | NFS Forgivable Loans            
Debt Instrument [Line Items]            
Effective percentage   11.00%