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EARNINGS PER SHARE (Tables)
 6 Months Ended
Jun. 30, 2020
Earnings Per Share [Abstract]  
Summary of Earnings per Share Computation
A summary of the numerator and denominators used in the computation of earnings per share follows:
 Three Months Ended
June 30,		Six Months Ended
June 30,
 2020201920202019
Numerator:
Net income$12,113  $11,915  $13,072  $10,201  
Denominators:
Number of shares outstanding, end of period:
Class A common stock47,382  46,599  47,382  46,599  
Class B common stock988  988  988  988  
Shares to be issued - acquisition—  36  —  36  
Unvested restricted stock(1) (9) (1) (9) 
Effect of weighted average shares outstanding(21) (150) (193) (921) 
Basic weighted average common shares outstanding48,348  47,464  48,176  46,693  
Impact of potentially dilutive securities:
Dilutive effect of stock options and other stock awards215  757  235  731  
Diluted weighted average common shares outstanding48,563  48,221  48,411  47,424  
Anti-dilutive potentially issuable shares12  —  12  154