Minimum Lease Commitments (Tables)

12 Months Ended

Dec. 31, 2018

Leases [Abstract]

Approximate Minimum Annual Gross Rental Payments and Gross Rental Income

The approximate minimum annual gross rental payments and gross rental receipts under noncancelable agreements for office space with remaining terms in excess of one year as of December 31, 2018, are as follows (in thousands):

	Payments		Receipts
2019	$	15,106	$	7,533
2020	16,406		5,576
2021	15,116		5,081
2022	14,253		3,636
2023	13,201		2,117
2024 and thereafter	131,615		5,233
Total minimum future amounts	$	205,697	$	29,176