LEASES - Lease Cost (Details) - USD ($) $ in Thousands |
3 Months Ended | 9 Months Ended |
---|---|---|
Sep. 30, 2019 |
Sep. 30, 2019 |
|
Lessee, Lease, Description [Line Items] | ||
Fixed lease cost | $ 4,777 | $ 13,884 |
Variable lease cost | 588 | 1,644 |
Net lease cost | 5,365 | 15,528 |
Short-term lease cost | 100 | 700 |
Sublease income | 500 | 1,000 |
Cost of revenue | ||
Lessee, Lease, Description [Line Items] | ||
Fixed lease cost | 80 | 127 |
Selling and marketing expense | ||
Lessee, Lease, Description [Line Items] | ||
Fixed lease cost | 2,374 | 6,804 |
Variable lease cost | 337 | 1,007 |
General and administrative expense | ||
Lessee, Lease, Description [Line Items] | ||
Fixed lease cost | 1,919 | 5,967 |
Variable lease cost | 197 | 528 |
Product development expense | ||
Lessee, Lease, Description [Line Items] | ||
Fixed lease cost | 404 | 986 |
Variable lease cost | $ 54 | $ 109 |