Fee and Other Income - Schedule of Fee and Other Income (Parenthetical) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Fee And Other Income [Line Items]
Lease termination income	$ 3,460	$ 50	$ 14,508	$ 688
1633 Broadway [Member]
Fee And Other Income [Line Items]
Lease termination income			$ 10,861