Selected Quarterly Financial Data

12 Months Ended

Sep. 30, 2020

Quarterly Financial Information Disclosure [Abstract]

Selected Quarterly Financial Data

20) Selected Quarterly Financial Data (unaudited)

	Three Months Ended
	Dec. 31,		Mar. 31,		Jun. 30,			Sep. 30,
(in thousands - except per unit data)	2019		2020		2020			2020			Total
Sales	$	508,945	$	543,063	$	232,155		$	183,295		$	1,467,458
Gross profit for product, installation and service		147,603		196,440		84,159			46,818			475,020
Operating income (loss)		42,451		86,117		498			(36,098	)		92,968
Income (loss) before income taxes		39,537		83,108		(2,051	)		(44,051	)		76,543
Net income (loss)		27,755		58,408		(46	)		(30,199	)		55,918
Limited Partner interest in net income (loss)		27,563		57,999		(45	)		(29,976	)		55,541
Net income (loss) per Limited Partner unit:
Basic and diluted (a)	$	0.49	$	1.03	$	—		$	(0.68	)	$	1.07

	Three Months Ended
	Dec. 31,		Mar. 31,		Jun. 30,			Sep. 30,
(in thousands - except per unit data)	2018		2019		2019			2019			Total
Sales	$	535,027	$	699,582	$	283,376		$	235,887		$	1,753,872
Gross profit for product, installation and service		154,484		218,549		66,191			48,482			487,706
Operating income (loss)		6,063		105,002		(29,933	)		(43,782	)		37,350
Income (loss) before income taxes		3,288		101,564		(33,153	)		(46,545	)		25,154
Net income (loss)		2,315		72,325		(23,098	)		(33,905	)		17,637
Limited Partner interest in net income (loss)		2,300		71,871		(22,948	)		(33,681	)		17,542
Net income (loss) per Limited Partner unit:
Basic and diluted (a)	$	0.04	$	1.15	$	(0.46	)	$	(0.69	)	$	0.35

(a) The sum of the quarters do not add-up to the total due to the weighting of Limited Partner Units outstanding, rounding or the theoretical effects of FASB ASC 260-10-45-60 to Master Limited Partners earnings per unit.