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LONG-TERM DEBT AND LEASE OBLIGATIONS
 12 Months Ended
Dec. 31, 2017
LONG-TERM DEBT AND LEASE OBLIGATIONS [Abstract]  
LONG-TERM DEBT AND LEASE OBLIGATIONS
Note 8, Long-Term Debt and Lease Obligations:

Long-term debt and lease obligations are summarized as follows:
(In thousands)
 
2017
  
2016
 
Revolving credit notes (a)
 
$
—
  
$
—
 
Lease obligations (b)
  
54,591
   
55,474
 
   
54,591
   
55,474
 
Less portion classified as current
  
(3,788
)
  
(3,461
)
  
$
50,803
  
$
52,013
 
(a)   We have a revolving credit agreement as described in Note 5.
(b)  These obligations are related to properties under lease with aggregate net book values of approximately $38,129,000 and $40,889,000 at December 31, 2017 and 2016, respectively.

The approximate aggregate maturities of these lease obligations during the five years subsequent to December 31, 2017 and thereafter are as follows:  2018 - $3,788,000; 2019 - $4,018,000,
2020 - $4,222,000; 2021 - $3,672,000; 2022 - $3,776,000 and $35,115,000 thereafter.  These maturities are net of imputed interest of approximately $15,294,000 at December 31, 2017.