Debt Obligations (Changes in Accretable Yield on Securitized Financings) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Sep. 29, 2018	Sep. 30, 2017	Sep. 29, 2018	Sep. 30, 2017
Accretable Yield Movement on Acquired Securitized Financings
Balance at the beginning of the period	$ 2,697	$ 6,666	$ 3,515	$ 7,636
Accretion	(774)	(846)	(1,577)	(1,716)
Adjustment to cash flows	(89)	(111)	(104)	(211)
Balance at the end of the period	$ 1,834	$ 5,709	$ 1,834	$ 5,709