Debt Obligations (Summarizes Securitized Financings) (Details) - USD ($) $ in Thousands		9 Months Ended
		Dec. 30, 2017	Sep. 30, 2017	Apr. 01, 2017	Dec. 31, 2016	Oct. 01, 2016	Apr. 02, 2016
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		$ 15,000
Maximum Advance under Secured Credit Facility		80.00%
Line of Credit Facility, Frequency of Payment and Payment Terms		20 year amortization schedules
Acquired Securitized Financings
Securitized financings - contractual amount		$ 49,155		$ 57,120
Purchase Discount
Accretable yield		(4,779)	$ (5,709)	(7,636)	$ (8,756)	$ (9,790)	$ (12,333)
Non-accretable difference	[1]	0		0
Total securitized financings, net		$ 44,376		$ 49,484
Secured Debt [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Interest Rate Description		0.0475
Secured Debt [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Interest Rate Description		10 year US Treasury bond rate plus 2.75%

[1] There is no non-accretable difference, as the contractual payments on acquired securitized financing are determined by the cash collections from the underlying loans.