Fair Value Measurements (Book Value and Estimated Fair Value) (Details) - USD ($) $ in Thousands		Dec. 31, 2016	Apr. 02, 2016
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Servicing Asset at Fair Value, Amount		$ 1,008	$ 803
Reported Value Measurement [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Investments, Fair Value Disclosure	[1]	25,236	24,247
Non-marketable equity investments, Fair Value Disclosure	[2]	15,788	14,841
Notes Receivable, Fair Value Disclosure	[3]	95,154	89,558
Interest Rate Lock Commitments Fair Value Disclosure	[4]	1	8
Forward Commitments Fair Value Disclosure	[4]	108	(31)
Inventory Finance Receivable	[5]	23,406	25,542
Securitized Financings	[6]	(57,753)	(61,171)
Servicing Asset at Fair Value, Amount	[7]	1,008	803
Estimate of Fair Value Measurement [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Investments, Fair Value Disclosure	[1]	25,236	24,247
Non-marketable equity investments, Fair Value Disclosure	[2]	15,788	14,841
Notes Receivable, Fair Value Disclosure	[3]	120,116	126,077
Interest Rate Lock Commitments Fair Value Disclosure	[4]	1	8
Forward Commitments Fair Value Disclosure	[4]	108	(31)
Inventory Finance Receivable	[5]	23,397	25,688
Securitized Financings	[6]	(61,035)	(60,220)
Servicing Asset at Fair Value, Amount	[7]	1,008	$ 803
Fair Value, Inputs, Level 1 [Member] | Fair Value, Measurements, Nonrecurring [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Inventory Finance Receivable		0
Securitized Financings		0
Fair Value, Inputs, Level 2 [Member] | Fair Value, Measurements, Nonrecurring [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Inventory Finance Receivable		0
Securitized Financings		(61,035)
Fair Value, Inputs, Level 3 [Member] | Fair Value, Measurements, Nonrecurring [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Inventory Finance Receivable		23,397
Securitized Financings		0
Estimate of Fair Value Measurement [Member] | Fair Value, Measurements, Nonrecurring [Member]
Financial Instruments, Financial Assets, Balance Sheet Groupings [Abstract]
Inventory Finance Receivable		23,397
Securitized Financings		$ (61,035)

[1] he fair value is based on quoted market prices. The fair value of Level 2 securities is based on other inputs, as further described below.

[2] The fair value approximates book value based on the non-marketable nature of the investments.

[3] Includes consumer loans receivable held for investment, held for sale and construction advances. The fair value of the loans held for investment is based on the discounted value of the remaining principal and interest cash flows. The fair value of the loans held for sale are estimated based on recent GSE mortgage backed bond prices. The fair value of the construction advances approximates book value and the sales price of these loans is estimated based on construction completed.

[4] The fair values are based on changes in GSE mortgage backed bond prices and, additionally for IRLCs, pull through rates.

[5] The fair value is estimated using market interest rates of comparable loans.

[6] The fair value is estimated using recent public transactions of similar asset-backed securities.

[7] The fair value of the mortgage servicing rights is based on the present value of expected net cash flows related to servicing these loans.