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Stockholders' Equity - Narrative (Details) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Mar. 17, 2017
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock repurchase and retirement (in shares)   0 0  
Stock repurchase and retirement   $ 5,000    
Common stock left remaining to repurchase under the plan (in shares)       510,004
Maximum annual repurchase amount       $ 5,000
Common Stock        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock repurchase and retirement (in shares)   432,439    
Stock repurchase and retirement   $ 5,000    
Stock repurchase and retirement (in dollars per share)   $ 11.54    
Shares converted (in shares) 3,175,584