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EARNINGS PER SHARE (Tables)
 3 Months Ended
Mar. 31, 2018
Earnings Per Share [Abstract]  
Summary of Numerator and Denominators Used in Computation of Earnings Per Share
A summary of the numerator and denominators used in the computation of earnings per share follows:
 
Three Months Ended
March 31,
 
2018
 
2017
Numerator:
 
 
 
Net loss
$
(3,910
)
 
$
(224
)
Denominators:
 
 
 
Number of shares outstanding, end of period:
 
 
 
Class A common stock
41,700

 
40,892

Class B common stock
988

 
988

Unvested restricted stock
(38
)
 
(88
)
Effect of weighted average shares outstanding
(280
)
 
(208
)
Basic and diluted weighted average common shares outstanding
42,370

 
41,584

Anti-dilutive potentially issuable shares
2,105

 
2,683