FAIR VALUE MEASUREMENTS - Input Hierarchy of Items Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Jun. 30, 2017	Mar. 31, 2017	Jun. 30, 2016
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative financial instruments	$ 275	$ 943	$ 0
Securitized beneficial interests	0	0	0
Total Assets	275	943	0
Guarantees	0	0	0
Derivative financial instruments, liabilities	0	0	0
Total liabilities	0	0	0
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative financial instruments	0	0	0
Securitized beneficial interests	13,199	38,206	14,681
Total Assets	13,199	38,206	14,681
Guarantees	6,388	7,126	5,891
Derivative financial instruments, liabilities	0	0	0
Total liabilities	6,388	7,126	5,891
Total Assets / Liabilities at Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative financial instruments	275	943	0
Securitized beneficial interests	13,199	38,206	14,681
Total Assets	13,474	39,149	14,681
Guarantees	6,388	7,126	5,891
Derivative financial instruments, liabilities	0	0	0
Total liabilities	$ 6,388	$ 7,126	$ 5,891