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Stock-Based Compensation (Narrative) (Details) - USD ($)
9 Months Ended 12 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Dec. 31, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares reserved under stock-based compensation plans, available for future grants (in shares) 1,621,245    
Shares granted during period (in shares) 678,051    
Weighted average grant date fair value, grants in period (in shares) $ 5.69 $ 4.98  
Options granted during period, gross (in shares) 14,222 3,300,000  
Percentage of options vested 100.00%    
Fair value assumptions, expected dividend rate 0.00%   0.00%
Minimum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting period   3 years  
Maximum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting period   5 years  
Restricted Stock      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Shares granted during period (in shares) 678,051 397,472  
Allocated share-based compensation expense $ 1,500,000 $ 1,000,000  
Unrecognized share based compensation - restricted stock units $ 5,500,000    
Restricted Stock | Minimum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting period 3 years    
Restricted Stock | Maximum      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Award vesting period 5 years    
Stock Option      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Allocated share-based compensation expense $ 800,000 $ 700,000  
Total compensation cost not yet recognized, stock options 3,600,000    
Restricted Stock Units (RSUs)      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Unrecognized share based compensation - restricted stock units $ 274,000.000   $ 0
Prime Pacific Financial Services      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Options granted during period, gross (in shares) 14,222    
Weighted-average exercise price (in usd per share) $ 3.71