Future Minimum Lease Payments - Additional Information (Detail) - Tenants	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Future Minimum Leases Payments Under Leases (Line Items)
Number of tenants		0
Siemens Real Estate [Member]
Future Minimum Leases Payments Under Leases (Line Items)
Total contribution of base rental	24.70%
Percentage of rentable square footage by tenant	18.80%