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RIGHT-OF-USE ASSETS AND LEASES - Narrative (Details) $ in Millions |  | 3 Months Ended | 6 Months Ended
--- | --- | --- | ---
Jul. 03, 2019 USD ($) ft² term story | Sep. 30, 2019 USD ($) | Sep. 30, 2019 USD ($)
Lessee, Lease, Description [Line Items] |  |  |
Term of contract | 132 months |  |
Renewal term | 5 years |  |
Operating lease expense |  | $ 4.2 | $ 6.2
Amount of lease not yet commenced |  | $ 2.2 | $ 2.2
Number of renewal terms | term | 2 |  |
Base rent | $ 0.7 |  |
Annual percentage increase in base rent | 3.00% |  |
Tenant improvements | $ 15.4 |  |
Security deposit | 2.0 |  |
Increase in operating lease right-of-use asset | 56.8 |  |
Increase in operating lease liability | $ 56.1 |  |
Minimum |  |  |
Lessee, Lease, Description [Line Items] |  |  |
Term of contract |  | 1 year | 1 year
Renewal term |  | 1 year | 1 year
Maximum |  |  |
Lessee, Lease, Description [Line Items] |  |  |
Term of contract |  | 11 years | 11 years
Renewal term |  | 5 years | 5 years
Property Held Under Operating Lease |  |  |
Lessee, Lease, Description [Line Items] |  |  |
Area of real estate property | ft² | 177,815 |  |
Number of building stories | story | 5 |  |

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