Finance Receivables, net (Schedule of Cash Collections Applied to Principal) (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2015
Receivables [Abstract]
March 31, 2016	$ 549,385
March 31, 2017	435,274
March 31, 2018	348,119
March 31, 2019	271,240
March 31, 2020	165,051
March 31, 2021	101,106
March 31, 2022	80,591
March 31, 2023	4,006
Total	$ 1,954,772