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Long-Term Debt (Tables)
12 Months Ended
Dec. 31, 2017
Debt Disclosure [Abstract]  
Schedule of Long-term Debt Instruments

Long-term debt outstanding and the weighted average interest rate at December 31 is summarized as follows: 

 

 

 

2017

 

 

2016

 

 

 

Debt Outstanding

 

 

Weighted Average

Interest Rate

 

 

Debt Outstanding

 

 

Weighted Average

Interest Rate

 

Revolving Line of Credit/Swing Line

 

$

206,250

 

 

 

2.65

%

 

$

259,389

 

 

 

2.46

%