Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Jan. 31, 2020	Apr. 30, 2019
Current assets:
Cash and cash equivalents	$ 43,539	$ 63,296
Receivables	46,383	37,856
Inventories	263,185	273,040
Prepaid expenses	14,430	7,493
Income tax receivable	22,091	28,895
Total current assets	389,628	410,580
Other assets, net of amortization	70,815	41,154
Goodwill	157,648	157,223
Property and equipment, net of accumulated depreciation of $1,983,258 at January 31, 2020 and $1,826,936 at April 30, 2019	3,303,943	3,122,419
Total assets	3,922,034	3,731,376
Current liabilities:
Lines of credit	76,000	75,000
Current maturities of long-term debt	577,743	17,205
Accounts payable	275,903	335,240
Accrued expenses	175,176	163,487
Total current liabilities	1,104,822	590,932
Long-term debt and finance lease obligations, net of current maturities	715,121	1,283,275
Deferred income taxes	425,242	385,788
Deferred compensation	15,892	15,881
Insurance accruals, net of current portion	22,673	22,663
Other long-term liabilities	49,694	24,068
Total liabilities	2,333,444	2,322,607
Shareholders’ equity:
Preferred stock, no par value	0	0
Common stock, no par value	28,985	15,600
Retained earnings	1,559,605	1,393,169
Total shareholders’ equity	1,588,590	1,408,769
Total liabilities and shareholders' equity	$ 3,922,034	$ 3,731,376

Carrying value as of the balance sheet date of liabilities incurred (and for which invoices have typically been received) and payable to vendors for goods and services received that are used in an entity's business. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).

Name:	us-gaap_AccountsPayableCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer).