Minimum Lease Commitments (Tables)

12 Months Ended

Dec. 31, 2016

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, 2016, are as follows (in thousands):

	Payments		Receipts
2017	$	10,598	$	4,986
2018	12,299		4,145
2019	11,730		2,764
2020	12,196		2,155
2021	10,686		1,633
2022 and thereafter	109,406		3,057
Total minimum future amounts	$	166,915	$	18,740