Note 11 - Recently Issued Accounting Standards (Details Textual) - USD ($)		3 Months Ended
	Apr. 01, 2019	Jun. 29, 2019	Sep. 28, 2019	Mar. 31, 2019	Sep. 29, 2018
Operating Lease, Right-of-Use Asset			$ 76,178,000
Operating Lease, Liability, Total			$ 78,768,000
Accounting Standards Update 2016-02 [Member]
Operating Lease, Right-of-Use Asset	$ 88,333,000
Operating Lease, Liability, Total	91,025,000
Cumulative Effect on Retained Earnings, Net of Tax, Total	2,019,000	$ 2,019,000
Cumulative Effect on Retained Earnings, before Tax	2,692,000
Cumulative Effect on Retained Earnings, Tax	$ 673,000