Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2019	Sep. 30, 2018
Current assets:
Cash and cash equivalents	$ 72,287	$ 129,927
Accounts receivable, less allowance of $13,095 and $17,584 as of September 30, 2019 and 2018, respectively	1,108,134	1,090,533
Inventories, net	1,018,183	936,047
Prepaid expenses and other current assets	315,643	244,360
Total current assets	2,514,247	2,400,867
Property and equipment, net	260,376	280,407
Goodwill	2,490,590	2,491,779
Intangibles, net	1,125,540	1,334,366
Other assets, net	2,059	1,243
Total assets	6,392,812	6,508,662
Current liabilities:
Accounts payable	822,931	880,872
Accrued expenses	599,155	611,539
Current portions of long-term debt/obligations	18,689	19,661
Total current liabilities	1,440,775	1,512,072
Borrowings under revolving lines of credit, net	80,961	92,442
Long-term debt, net	2,494,623	2,494,725
Deferred income taxes, net	103,913	106,994
Long-term obligations under equipment financing and other, net	4,609	13,639
Other long-term liabilities	6,383	5,290
Total liabilities	4,131,264	4,225,162
Commitments and contingencies (Note 9)
Convertible preferred stock; $0.01 par value; aggregate liquidation preference $400,000; 400,000 shares authorized, issued and outstanding as of September 30, 2019 and 2018	399,195	399,195
Stockholders' equity:
Common stock (voting); $0.01 par value; 100,000,000 shares authorized; 68,574,176 and 68,135,790 shares issued and outstanding as of September 30, 2019 and 2018, respectively	685	681
Undesignated preferred stock; 5,000,000 shares authorized, none issued or outstanding	0	0
Additional paid-in capital	1,083,042	1,067,040
Retained earnings	799,222	833,834
Accumulated other comprehensive income (loss)	(20,596)	(17,250)
Total stockholders' equity	1,862,353	1,884,305
Total liabilities and stockholders' equity	$ 6,392,812	$ 6,508,662