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Stockholders' Equity - Stock Repurchase Program (Details) - $ / shares
1 Months Ended 3 Months Ended 65 Months Ended
Oct. 23, 2014
Mar. 31, 2020
Mar. 31, 2020
Mar. 31, 2019
Mar. 31, 2020
Mar. 16, 2020
Class of Stock [Line Items]            
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount     21,475 31,557    
Eleventh Stock Repurchase Plan            
Stockholders Equity (Textual) [Abstract]            
Number of shares repurchased (in shares)       0 639,922  
Withholding taxes average price per share (in usd per share)     $ 23.95      
Twelfth Stock Repurchase Plan [Member] [Member] [Domain]            
Stockholders Equity (Textual) [Abstract]            
Outstanding share percent 5.00%          
Outstanding common shares in the plan (in shares)           1,799,054
Number of shares repurchased (in shares)   155,778        
Withholding taxes average price per share (in usd per share)     $ 20.34