Commitments and Contingencies - Build to Suit (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2015 USD ($) phase	Dec. 31, 2014 USD ($)	Jun. 30, 2014 USD ($)	Jun. 30, 2013 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Financing obligation number of phases | phase	2
Financing obligation, lessor committed fundings phase 1	$ 11,800
Financing obligation, lessor committed fundings phase 2	11,100
Debt Instrument [Line Items]
Capital leased assets	39,850	$ 40,806
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 55,379	53,950
Financing obligation, purchase option period	3 years
Buildings
Debt Instrument [Line Items]
Capital leased assets	$ 36,596	37,380
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 36,596	$ 37,380	$ 19,900	$ 17,100
Financing Lease Obligation
Debt Instrument [Line Items]
Capital leased assets			$ 11,100	$ 11,800