Fair Value Measurements Input Hierarchy of Items Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Jun. 30, 2016	Mar. 31, 2016	Jun. 30, 2015
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative financial instruments	$ 0	$ 0	$ 609
Securitized beneficial interests	0	0	0
Total Assets	0	0	609
Guarantees	0	0	0
Derivative financial instruments	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	14,681	40,368	23,256
Total Assets	14,681	40,368	23,256
Guarantees	5,891	7,350	7,723
Derivative financial instruments	0	0	0
Total liabilities	5,891	7,350	7,723
Total Assets / Liabilities, at Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative financial instruments	0	0	609
Securitized beneficial interests	14,681	40,368	23,256
Total Assets	14,681	40,368	23,865
Guarantees	5,891	7,350	7,723
Derivative financial instruments	0	0	0
Total liabilities	$ 5,891	$ 7,350	$ 7,723