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Stockholders' Equity (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Stockholders' Equity Note [Abstract]    
Aggregate number of shares repurchased during the period (in shares) 131,153  
Shares repurchased under the program (in shares) 0  
Authorized to repurchased additional shares under repurchase program (in shares) 2,677,564  
Shares withheld for tax withholding obligations for the vesting of restricted stock awards (in shares) 131,153  
Dividends declared per share of common stock (in dollars per share) $ 0.20 $ 0.125
Payments of Dividends $ 8,402 $ 5,272