Subsequent Event (Details) - 320 Bent Sublease - item	Oct. 28, 2015	Feb. 05, 2013
Subsequent Event
Extended lease term		1 year
Number of times for which extension of lease term is available		2
Additional number of times extension of lease term is available		2
Additional extended lease term		5 years
Subsequent event
Subsequent Event
Extended lease term	1 year
Number of times for which extension of lease term is available	1
Additional number of times extension of lease term is available	2
Additional extended lease term	5 years