Annual report pursuant to Section 13 and 15(d)

Subsequent Event (Details)

v3.7.0.1
Subsequent Event (Details)
$ in Thousands
 12 Months Ended
Mar. 03, 2017
USD ($)
Feb. 13, 2017
USD ($)
Dec. 31, 2016
USD ($)
Line Of Credit Facility And Long Term Debt [Line Items]      
Credit facility maximum borrowing capacity     $ 20,000
Subsequent Event [Member]      
Line Of Credit Facility And Long Term Debt [Line Items]      
Repayments of 5% unsecured subordinated debt   $ 814  
Zions First National Bank [Member]      
Line Of Credit Facility And Long Term Debt [Line Items]      
Debt maturity date     Apr. 01, 2017
Credit facility maximum borrowing capacity     $ 20,000
Third Amendment to Second Amended and Restated Loan Agreement [Member] | Subsequent Event [Member]      
Line Of Credit Facility And Long Term Debt [Line Items]      
Debt maturity date Apr. 01, 2020    
Credit facility maximum borrowing capacity $ 20,000    
Third Amendment to Second Amended and Restated Loan Agreement Option 1 [Member] | Subsequent Event [Member]      
Line Of Credit Facility And Long Term Debt [Line Items]      
Imputed interest rate 0.60%    
Third Amendment to Second Amended and Restated Loan Agreement Option 1 [Member] | Subsequent Event [Member] | LIBOR [Member]      
Line Of Credit Facility And Long Term Debt [Line Items]      
Imputed interest rate 4.00%    
Third Amendment to Second Amended and Restated Loan Agreement Option 2 [Member] | Subsequent Event [Member]      
Line Of Credit Facility And Long Term Debt [Line Items]      
Imputed interest rate 0.50%    
Third Amendment to Second Amended and Restated Loan Agreement Option 2 [Member] | Subsequent Event [Member] | LIBOR [Member]      
Line Of Credit Facility And Long Term Debt [Line Items]      
Imputed interest rate 3.00%    
Third Amendment to Second Amended and Restated Loan Agreement Option 3 [Member] | Subsequent Event [Member]      
Line Of Credit Facility And Long Term Debt [Line Items]      
Imputed interest rate 0.40%    
Third Amendment to Second Amended and Restated Loan Agreement Option 3 [Member] | Subsequent Event [Member] | LIBOR [Member]      
Line Of Credit Facility And Long Term Debt [Line Items]      
Imputed interest rate 2.00%    
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
Minimum [Member] | Loan Agreement [Member] | Subsequent Event [Member]      
Line Of Credit Facility And Long Term Debt [Line Items]      
Debt to EBITDA ratio used in margin calculation 1.00    
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
Maximum [Member] | Loan Agreement [Member] | Subsequent Event [Member]      
Line Of Credit Facility And Long Term Debt [Line Items]      
Debt to EBITDA ratio used in margin calculation 2.00