Acquisitions (Purchase price allocation) (Details) - USD ($) $ in Thousands	6 Months Ended
	Sep. 29, 2018	Mar. 31, 2018	Mar. 09, 2018	Sep. 30, 2017
Purchase Price Allocation
Goodwill	$ 33,217			$ 19,917
Contingent consideration	(10,542)			$ (1,600)
DTG2Go
Purchase Price Allocation
Accounts receivable	788	$ 822
Other assets	102	0
Inventory, net of reserves	1,146	1,159
Fixed assets	150	0
Assets held for sale	5,000	5,000	$ 5,000
Goodwill	13,300	9,800
Intangible assets	5,600	5,200
Accounts payable, including payable to sellers	(771)	(5,981)
Other liabilities	(13)	0
Contingent consideration	(8,700)	(4,650)	$ (8,700)
Consideration paid	16,602	$ 11,350
Measurement Period Adjustments
Accounts receivable	(34)
Other assets	102
Inventory, net of reserves	(13)
Fixed assets	150
Goodwill	3,500
Intangible assets	400
Accounts payable, including payable to sellers	5,210
Other liabilities	(13)
Contingent consideration	4,050
Consideration paid	$ 5,252