Annual report pursuant to Section 13 and 15(d)

Long-Term Debt (Narrative) (Details)

v3.7.0.1
Long-Term Debt (Narrative) (Details)
$ in Thousands
 12 Months Ended
Mar. 03, 2017
USD ($)
May 28, 2010
Dec. 31, 2016
USD ($)
Dec. 31, 2015
USD ($)
Dec. 31, 2014
USD ($)
Line Of Credit Facility And Long Term Debt [Line Items]          
Subordinated Debt     $ 22,610 $ 22,610  
Unamortized discount     814 2,582  
Subordinated Borrowing, Interest Rate   5.00%      
Credit facility maximum borrowing capacity     20,000    
Zions First National Bank [Member]          
Line Of Credit Facility And Long Term Debt [Line Items]          
Line of credit facility, amount outstanding     0    
Credit facility maximum borrowing capacity     $ 20,000    
Debt maturity date     Apr. 01, 2017    
Gregory Stockholders [Member]          
Line Of Credit Facility And Long Term Debt [Line Items]          
Discounted subordinated notes     $ 13,127    
Accretion of discount     1,768 $ 1,537 $ 1,337
Subordinated Debt     $ 22,056    
Subordinated Borrowing, Interest Rate     5.00%    
Government Entity And Other Financial Institutions [Member]          
Line Of Credit Facility And Long Term Debt [Line Items]          
Interest rate range, minimum     0.75%    
Second Amended and Restated Loan Agreement Opiton 1 [Member]          
Line Of Credit Facility And Long Term Debt [Line Items]          
Imputed interest rate     0.60%    
Second Amended and Restated Loan Agreement Opiton 1 [Member] | LIBOR [Member]          
Line Of Credit Facility And Long Term Debt [Line Items]          
Imputed interest rate     4.00%    
Second Amended and Restated Loan Agreement Opiton 2 [Member]          
Line Of Credit Facility And Long Term Debt [Line Items]          
Imputed interest rate     0.50%    
Second Amended and Restated Loan Agreement Opiton 2 [Member] | LIBOR [Member]          
Line Of Credit Facility And Long Term Debt [Line Items]          
Imputed interest rate     3.00%    
Second Amended and Restated Loan Agreement Opiton 3 [Member]          
Line Of Credit Facility And Long Term Debt [Line Items]          
Imputed interest rate     0.40%    
Second Amended and Restated Loan Agreement Opiton 3 [Member] | LIBOR [Member]          
Line Of Credit Facility And Long Term Debt [Line Items]          
Imputed interest rate     2.00%    
Additional Subordinated Debt [Member] | Gregory Stockholders [Member]          
Line Of Credit Facility And Long Term Debt [Line Items]          
Discounted subordinated notes     $ 316    
Subordinated Debt     $ 554    
Minimum [Member] | Loan Agreement [Member] | LIBOR [Member]          
Line Of Credit Facility And Long Term Debt [Line Items]          
Debt to EBITDA ratio used in margin calculation     1.00    
Maximum [Member] | Government Entity And Other Financial Institutions [Member]          
Line Of Credit Facility And Long Term Debt [Line Items]          
Maturity date range start     Mar. 01, 2017    
Maximum [Member] | Loan Agreement [Member]          
Line Of Credit Facility And Long Term Debt [Line Items]          
Debt to EBITDA ratio used in margin calculation     2.00    
Subsequent Event [Member] | Third Amendment to Second Amended and Restated Loan Agreement [Member]          
Line Of Credit Facility And Long Term Debt [Line Items]          
Credit facility maximum borrowing capacity $ 20,000        
Debt maturity date Apr. 01, 2020        
Subsequent Event [Member] | Third Amendment to Second Amended and Restated Loan Agreement Option 1 [Member]          
Line Of Credit Facility And Long Term Debt [Line Items]          
Imputed interest rate 0.60%        
Subsequent Event [Member] | Third Amendment to Second Amended and Restated Loan Agreement Option 1 [Member] | LIBOR [Member]          
Line Of Credit Facility And Long Term Debt [Line Items]          
Imputed interest rate 4.00%        
Subsequent Event [Member] | Third Amendment to Second Amended and Restated Loan Agreement Option 2 [Member]          
Line Of Credit Facility And Long Term Debt [Line Items]          
Imputed interest rate 0.50%        
Subsequent Event [Member] | Third Amendment to Second Amended and Restated Loan Agreement Option 2 [Member] | LIBOR [Member]          
Line Of Credit Facility And Long Term Debt [Line Items]          
Imputed interest rate 3.00%        
Subsequent Event [Member] | Third Amendment to Second Amended and Restated Loan Agreement Option 3 [Member]          
Line Of Credit Facility And Long Term Debt [Line Items]          
Imputed interest rate 0.40%        
Subsequent Event [Member] | Third Amendment to Second Amended and Restated Loan Agreement Option 3 [Member] | LIBOR [Member]          
Line Of Credit Facility And Long Term Debt [Line Items]          
Imputed interest rate 2.00%        
Subsequent Event [Member] | Minimum [Member] | Loan Agreement [Member]          
Line Of Credit Facility And Long Term Debt [Line Items]          
Debt to EBITDA ratio used in margin calculation 1.00        
Subsequent Event [Member] | Maximum [Member] | Loan Agreement [Member]          
Line Of Credit Facility And Long Term Debt [Line Items]          
Debt to EBITDA ratio used in margin calculation 2.00