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Stock - Based Compensation Plans (Tables)
12 Months Ended
Dec. 31, 2016
Disclosure of Compensation Related Costs, Share-based Payments [Abstract]  
Summary of Nonvested Phantom Stock Units

The following table summarizes information about the Company’s nonvested phantom stock Units at December 31, 2016:

 

    Units     Weighted Average Grant Date Fair Value  
Number of Phantom Stock Unit Awards:                
Nonvested at December 31, 2015     20,335     $ 22.74  
Granted     13,210     $ 30.57  
Vested     (9,874 )   $ 20.16  
Forfeited            
Canceled            
Nonvested at December 31, 2016     23,671     $ 27.87  
Phantom Stock Unit Awards Expected to Vest     23,671     $ 27.87