INCOME PER SHARE OF COMMON STOCK - NARRATIVE (Details) - $ / shares	3 Months Ended		6 Months Ended
	Mar. 28, 2020	Mar. 29, 2019	Mar. 28, 2020	Mar. 29, 2019
Exercise Price One
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares excluded from computation of earning per share (in shares)	129,000	35,000	129,000	35,000
Exercise price of shares excluded from computation of earnings per share (in USD per share)	$ 14.40	$ 12.04	$ 14.40	$ 12.04
Exercise Price Two
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares excluded from computation of earning per share (in shares)	5,000	133,750	5,000	133,750
Exercise price of shares excluded from computation of earnings per share (in USD per share)	$ 20.26	$ 14.40	$ 20.26	$ 14.40
Exercise Price Three
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares excluded from computation of earning per share (in shares)	172,500	5,000	172,500	5,000
Exercise price of shares excluded from computation of earnings per share (in USD per share)	$ 22.50	$ 20.26	$ 22.50	$ 20.26
Exercise Price Four
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares excluded from computation of earning per share (in shares)	20,000	173,500	20,000	173,500
Exercise price of shares excluded from computation of earnings per share (in USD per share)	$ 22.30	$ 22.50	$ 22.30	$ 22.50
Exercise Price Five
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares excluded from computation of earning per share (in shares)	11,000	20,000	11,000	20,000
Exercise price of shares excluded from computation of earnings per share (in USD per share)	$ 20.18	$ 22.30	$ 20.18	$ 22.30
Exercise Price Six
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Shares excluded from computation of earning per share (in shares)	266,500		266,500
Exercise price of shares excluded from computation of earnings per share (in USD per share)	$ 21.90		$ 21.90