Annual report pursuant to Section 13 and 15(d)

Composition of Certain Financial Statement Captions - Narrative (Details)

v3.3.1.900
Composition of Certain Financial Statement Captions - Narrative (Details)
 11 Months Ended 12 Months Ended
Dec. 31, 2013
USD ($)
Dec. 31, 2015
USD ($)
security
Dec. 31, 2014
USD ($)
Property, Plant and Equipment [Line Items]      
Number of owned securities that were in an unrealized loss position | security   71  
Unrealized losses deemed to be other-than-temporary   $ 0  
Proceeds from sale of available-for-sale securities $ 0 111,356,000 $ 0
Realized gain (loss) in connecting with sales of available-for-sale securities   0  
Depreciation 9,700,000 20,400,000 14,700,000
Capitalized cost related to internal use software and website development costs 700,000 2,700,000 1,300,000
Accumulated amortization   $ 55,145,000 35,177,000
Software developed for internal use      
Property, Plant and Equipment [Line Items]      
Expected useful lives   3 years  
Capitalized cost related to internal use software and website development costs   $ 6,300,000 2,800,000
Accumulated amortization   4,000,000 1,700,000
Amortization expense $ 600,000 2,200,000 $ 1,100,000
Other current assets      
Property, Plant and Equipment [Line Items]      
Receivables for the reimbursement of costs of leasehold improvements in connection with operating leases   $ 12,900,000