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Leases (Tables)
9 Months Ended
Sep. 30, 2018
Leases [Abstract]  
Schedule of Operating Lease Rental Expense

Operating lease rental expense associated with all operating leases, which is calculated on a straight-line basis, is as follows:

 

 

 

Three Months Ended September 30,

 

 

Nine Months Ended September 30,

 

(In thousands)

 

2018

 

 

2017

 

 

2018

 

 

2017

 

Space agreements

 

$

9,559

 

 

$

9,245

 

 

$

28,981

 

 

$

27,884

 

Related party leases

 

 

384

 

 

 

469

 

 

 

1,175

 

 

 

1,550

 

Other operating leases

 

 

3,805

 

 

 

3,430

 

 

 

11,215

 

 

 

9,958

 

Total rent expense

 

$

13,748

 

 

$

13,144

 

 

$

41,371

 

 

$

39,392