Summary of Accrued Expenses and Other Current Liabilities (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014		Dec. 31, 2013
Accrued Expenses And Other Current Liabilities [Abstract]
Accrued compensation and benefits	$ 25,652		$ 26,903
Professional services	23,398		14,128
Fulfillment, freight, and duties	17,482		12,565
Sales/use and VAT tax payable	16,771		9,142
Accrued rent and occupancy	12,473		12,198
Customer deposits	3,985		6,940
Dividend payable	3,033
Accrued legal liabilities	831		8,722
Other	6,475	[1]	6,513	[1]
Total accrued expenses and other current liabilities	$ 110,100		$ 97,111

[1] The amounts in ‘Other’ consist of various accrued expenses and no individual item accounted for more than 5% of the total balance at June 30, 2014 or December 31, 2013.