Commitments Under Operating Leases (Tables)
 12 Months Ended
Dec. 31, 2015
Leases, Operating [Abstract]  
Schedule of rent expense
Rental expenses, net of amortization of any incentives provided by lessors, for operating leases consisted of the following:
Year Ended December 31,
2015
 
2014
 
2013
 
(In thousands)
Office space
$
44,577

 
$
43,277

 
$
43,715

Automobiles
7,319

 
7,615

 
7,711

Computers and equipment
13

 
378

 
344

Total operating leases
$
51,909

 
$
51,270

 
$
51,770
Schedule of future minimum rental payments for operating leases
At December 31, 2015, future minimum payments under non-cancelable operating leases with terms of more than 12 months were as follows:
Year Ending December 31,
(In thousands)
2016
$
42,851

2017
37,000

2018
25,352

2019
20,994

2020
16,178

2021 and Thereafter
25,510
Future minimum sublease rentals
Under executed sublease arrangements at December 31, 2015, the sublessors are obligated to pay the Company minimum sublease payments as follows:
Year Ending December 31,
(In thousands)
2016
$
3,460

2017
3,532

2018
3,608

2019
3,684

2020
3,761

2021
3,841

Total minimum sublease payments to be received
$
21,886