Commitments and Contingencies (Details) $ in Thousands				1 Months Ended	3 Months Ended		6 Months Ended
	Nov. 18, 2015 petition	Oct. 22, 2015 petition	Oct. 06, 2015 petition	Aug. 30, 2013	Jun. 30, 2016 USD ($)	Jun. 30, 2015 USD ($)	Jun. 30, 2016 USD ($)	Jun. 30, 2015 USD ($)	Dec. 31, 2015 USD ($)	Dec. 19, 2014 complaint	Dec. 05, 2014 complaint
Long-term Purchase Commitment [Line Items]
Rent expense					$ 2,400	$ 1,200	$ 4,700	$ 2,000
Lease term				120 months
Recorded assets					119,478		119,478		$ 110,045
Lease financing obligation					41,900		41,900		42,500
Lease financing obligations, current					1,500		1,500
Lease financing obligations, non-current					40,438		40,438		41,210
Contract manufacturer liability					253,400		253,400		43,900
Cisco Systems, Inc.
Long-term Purchase Commitment [Line Items]
Number of pending claims | complaint										2	2
Number of petitions denied | petition	1	4	1
Deposits and other assets
Long-term Purchase Commitment [Line Items]
Restricted deposits					2,300		2,300		2,300
Building and improvements
Long-term Purchase Commitment [Line Items]
Useful life				30 years
Recorded assets					53,400		53,400		$ 53,400
Land
Long-term Purchase Commitment [Line Items]
Land lease expense					$ 300	$ 600	$ 300	$ 600