Commitments and Contingencies (Details)	9 Months Ended
	Sep. 30, 2016 USD ($) lease	Dec. 31, 2015 USD ($)
Loss Contingencies [Line Items]
Accrued in period	$ 0	$ 0
Number of Built-to-Suit lease arrangements | lease	2
Build To Suit Lease [Member]
Loss Contingencies [Line Items]
Build-to-suit construction in progress	$ 25,100,000
Total estimated cost of build-to-suit construction in progress	$ 55,000,000