Acquisitions (Tables)
 12 Months Ended
Dec. 31, 2014
Business Combinations [Abstract]  
Summary of Pro Forma Information Company's Results of Operations
 
Year Ended December 31, 2013
 
Year Ended December 31, 2012
Net revenues
$
378,696

 
$
379,270

Net income attributable to common stockholders
18,626

 
17,684

Net income per share attributable to common stockholders:
 
 
 
Basic
1.35

 
1.61

Diluted
1.35

 
1.61

Weighted average shares outstanding(1):
 
 
 
Basic
13,768,836

 
10,989,466

Diluted
13,793,844

 
10,989,466


(1) Weighted average shares outstanding for the purposes of the above pro forma calculation assume the Convertible Redeemable Preferred Stock of 4,008,439 shares converted to the same number of shares of common stock at the beginning of the period presented.