Quarterly Financial Data (Unaudited) (Tables)

12 Months Ended

Sep. 30, 2019

Quarterly Financial Information Disclosure [Abstract]

Summary of Quarterly Financial Information

The following table sets forth certain unaudited quarterly financial data for each of our last eight quarters. The information has been derived from unaudited financial statements that we believe reflect all adjustments, consisting only of normal recurring adjustments, necessary for the fair presentation of such quarterly financial information.

	December 31, 2017		March 31, 2018		June 30, 2018		September 30, 2018		December 31, 2018		March 31, 2019		June 30, 2019		September 30, 2019
	(Amounts in thousands except share and per share data)
Revenue	$	236,921	$	270,605	$	361,254	$	308,591	$	241,937	$	303,586	$	383,494	$	308,136
Cost of sales		177,672		201,312		270,567		229,587		178,459		229,384		285,784		220,694
Gross profit		59,249		69,293		90,687		79,004		63,478		74,202		97,710		87,442
Selling, general and administrative expenses		50,246		58,659		64,089		62,056		54,492		63,976		68,968		74,864
Income from operations		9,003		10,634		26,598		16,948		8,986		10,226		28,742		12,578
Interest expense		2,542		2,840		2,499		2,022		2,516		3,033		2,936		3,094
Income before income income tax provision		6,461		7,794		24,099		14,926		6,470		7,193		25,806		9,484
Income tax provision		2,249		1,610		6,723		3,386		1,560		1,890		6,719		2,799
Net income	$	4,212	$	6,184	$	17,376	$	11,540	$	4,910	$	5,303	$	19,087	$	6,685
Net income per share:
Diluted	$	0.19	$	0.27		0.75		0.50	$	0.21	$	0.23		0.84		0.31
Weighted average number of shares:
Diluted		22,712,648		22,940,594		23,182,546		23,286,206		23,400,685		23,417,688		22,821,202		21,896,257