XML 82 R68.htm IDEA: XBRL DOCUMENT v3.8.0.1
Quarterly Financial Data - Summary of Quarterly Financial Information (Detail) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 12 Months Ended
Sep. 30, 2017
Jun. 30, 2017
Mar. 31, 2017
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2015
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2015
Quarterly Financial Information Disclosure [Abstract]                      
Revenue $ 250,618 $ 329,809 $ 245,018 $ 226,875 $ 227,355 $ 345,592 $ 199,566 $ 169,537 $ 1,052,320 $ 942,050 $ 751,370
Cost of sales 184,292 245,017 183,959 173,737 170,870 266,690 150,539 127,923 787,005 716,022 566,603
Gross profit 66,326 84,792 61,059 53,138 56,485 78,902 49,027 41,614 265,315 226,028 184,767
Selling, general, and administrative expenses 58,593 59,557 54,781 47,095 49,041 54,325 43,459 38,951 220,026 185,776 159,435
Income from operations 7,733 25,235 6,278 6,043 7,444 24,577 5,568 2,663 45,289 40,252 25,332
Interest expense 1,970 1,897 2,045 1,569 1,180 1,473 1,582 1,227 7,481 5,462 4,454
Income before income tax provision (benefit) 5,763 23,338 4,233 4,474 6,264 23,104 3,986 1,436 37,808 34,790 20,878
Income tax provision 1,852 9,094 1,484 1,831 678 9,285 1,497 748 14,261 12,208 (27,414)
Net income $ 3,911 $ 14,244 $ 2,749 $ 2,643 $ 5,586 $ 13,819 $ 2,489 $ 688 $ 23,547 $ 22,582 $ 48,292
Net income per share:                      
Diluted $ 0.17 $ 0.57 $ 0.11 $ 0.11 $ 0.22 $ 0.56 $ 0.10 $ 0.03 $ 0.95 $ 0.91 $ 1.92
Weighted average number of shares:                      
Diluted 23,591,854 25,095,398 25,116,359 24,923,125 25,010,193 24,770,980 24,758,826 24,742,330 24,678,800 24,820,847 25,102,289