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Stock-Based Compensation (Details Narrative) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Stock based compensation $ 2,227 $ 1,299
Unrecognized compensation costs related to non-vested stock options  
Stock Option [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Share based compensation of weighted average period term 4 years 4 months 17 days  
Restricted Stock [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Unamortized stock-based compensation costs $ 3,892  
Share based compensation of weighted average period term 1 year 3 months 4 days  
Selling General and Administrative Expenses [Member] | Stock Option [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Stock based compensation $ 0 962
Mr. Robert Lowrey [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Stock granted during period restricted shares 750,000  
Stock option vesting period 24 months  
Employee and Director [Member] | Selling General and Administrative Expenses [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Stock based compensation $ 1,087 $ 338