Debt Obligations (Changes in Accretable Yield on Securitized Financings) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 30, 2017	Dec. 31, 2016	Dec. 30, 2017	Dec. 31, 2016
Accretable Yield Movement on Acquired Securitized Financings
Balance at the beginning of the period	$ 5,709	$ 9,790	$ 7,636	$ 12,333
Accretion	(820)	(923)	(2,536)	(2,829)
Adjustment to cash flows	(110)	(111)	(321)	(748)
Balance at the end of the period	$ 4,779	$ 8,756	$ 4,779	$ 8,756