FUTURE MINIMUM LEASE RENTALS (Tables)

6 Months Ended

Jun. 30, 2018

Leases, Operating [Abstract]

Future Minimum Rental Revenue Under Long-Term Operating Leases

Future minimum rental revenue under long-term operating leases at June 30, 2018, excluding tenant reimbursements of certain costs, are as follows:

Years Ending December 31,	Governmental Tenants		Other Tenants		Total
	(in thousands)
2018 (Six months ending December 31, 2018)	$	18,547	$	46,838	$	65,385
2019	35,623		94,146		129,769
2020	33,423		82,987		116,410
2021	22,525		67,811		90,336
2022	11,221		62,667		73,888
Thereafter	40,318		155,835		196,153
	$	161,657	$	510,284	$	671,941