Debt Obligations (Changes in Accretable Yield on Securitized Financings) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2016	Dec. 26, 2015	Dec. 31, 2016	Dec. 26, 2015
Accretable Yield Movement on Acquired Securitized Financings
Balance at the beginning of the period	$ 9,790	$ 13,993	$ 12,333	$ 12,128
Accretion	(923)	(1,022)	(2,829)	(2,575)
Adjustment to cash flows	(111)	(4)	(748)	3,414
Balance at the end of the period	$ 8,756	$ 12,967	$ 8,756	$ 12,967