Business Combinations (Details) - USD ($)	6 Months Ended		12 Months Ended
	Jul. 01, 2017	Jul. 02, 2016	Feb. 28, 2017
Investment in businesses	$ 10,877,000	$ 4,170,000
Liabilities assumed	1,439,000	98,000
Debt issued	3,099,000	$ 575,000
Cash paid	7,778,000
Cash	326,000
Receivables	1,759,000
Prepaid expense	128,000
Equipment	1,904,000
Deposits and other	129,000
Finite-lived intangibles	4,566,000
Goodwill	3,504,000
Arborguard Tree Specialists Inc. [Member]
Liabilities assumed	1,416,000
Debt issued	2,724,000
Cash paid	7,200,000
Revenue reported by acquired entity for last annual period			$ 10,711,000
Business Combination, Recognized Identifiable Assets Acquired And Liabilities Assumed, Intangible Assets, Including Goodwill	$ 3,104,000