SHAREHOLDERS' EQUITY AND EMPLOYEE BENEFIT PLANS (Employee stock option activity) (Details) - Employee Stock Option [Member] - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	12 Months Ended
	Sep. 28, 2019	Sep. 29, 2018	Sep. 30, 2017
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Number of shares, Options outstanding, beginning balance (in shares)	2	16	90
Number of shares, Exercised (in shares)	(2)	(6)	(61)
Number of shares, Forfeited or expired (in shares)	0	(8)	(13)
Number of shares, Options outstanding, ending balance (in shares)	0	2	16
Number of shares, Options vested and expected to vest (in shares)	0
Number of shares, Options exercisable (in shares)	0
Number of shares, In the money exercisable options (in shares)	0
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]
Weighted average exercise price, Options outstanding, beginning balance (in dollars per share)	$ 8.64	$ 8.73	$ 8.41
Weighted average exercise price, Exercised (in dollars per share)	8.64	8.74	8.31
Weighted average exercise price, Forfeited or expired (in dollars per share)	0	8.74	8.50
Weighted average exercise price, Options outstanding, ending balance (in dollars per share)	0	$ 8.64	$ 8.73
Weighted average exercise price, Options vested and expected to vest (in dollars per share)	0
Weighted average exercise price, Options exercisable (in dollars per share)	$ 0
Average remaining contractual life, Options outstanding (in years)	0 years
Average remaining contractual life, Options vested and expected to vest (in years)	0 years
Average remaining contractual life, Options exercisable (in years)	0 years
Aggregate intrinsic value, Exercised	$ 24	$ 73	$ 531
Aggregate intrinsic value, Options outstanding	0
Aggregate intrinsic value, Options vested and expected to vest	0
Aggregate intrinsic value, In the money exercisable options	$ 0