COMMITMENTS AND CONTINGENCIES - ANNUAL MINIMUM OBLIGATIONS (Details) $ in Thousands	Mar. 31, 2018 USD ($)
Operating Leases
2019	$ 39,113
2020	29,620
2021	23,092
2022	21,665
2023	19,571
Thereafter	62,476
Total	195,537
Purchase Obligations
2019	21,549
2020	7,046
2021	1,629
2022	0
2023	0
Thereafter	0
Total	30,224
Convertible Notes Interest
2019	20
2020	0
2021	0
2022	0
2023	0
Thereafter	0
Total	20
Convertible Notes
2019	8,160
2020	0
2021	0
2022	0
2023	0
Thereafter	0
Total	8,160
2019	234,809
2020	94,260
2021	67,200
2022	47,186
2023	29,321
Thereafter	67,726
Total	540,502
Software Development and licensing
Unrecorded Unconditional Purchase Obligation
2019	116,242
2020	53,534
2021	28,999
2022	21,748
2023	6,250
Thereafter	5,250
Total	232,023
Marketing
Unrecorded Unconditional Purchase Obligation
2019	49,725
2020	4,060
2021	13,480
2022	3,773
2023	3,500
Thereafter	0
Total	$ 74,538