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Income Taxes | 12 Months Ended
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Sep. 30, 2017
Income Taxes [Abstract] |
Income Taxes | 2. Income Taxes Deferred Income Tax Liabilities and Assets – Deferred income taxes are determined based on the difference between the financial statement and tax bases of assets and liabilities using enacted tax laws and rates. Significant components of the Company’s deferred tax liabilities and assets are as follows: ﻿
﻿ |  |  |  |  |  |
﻿ |  |  |  |  |  |
﻿ |  | 2017 |  | 2016
﻿Deferred tax liabilities: |  |  |  |  |  |
﻿Property and equipment tax/book differences |  | $ | 89,089,000 |  | $ | 88,465,000
﻿Property tax method |  |  | 1,575,000 |  |  | 1,501,000
﻿Total deferred tax liabilities |  |  | 90,664,000 |  |  | 89,966,000
﻿Deferred tax assets: |  |  |  |  |  |
﻿Insurance reserves |  |  | 7,872,000 |  |  | 8,390,000
﻿Advance payments on purchases contracts |  |  | 1,207,000 |  |  | 618,000
﻿Vacation accrual |  |  | 2,471,000 |  |  | 2,520,000
﻿State tax credits |  |  | 4,000 |  |  | 20,000
﻿Inventory |  |  | 1,555,000 |  |  | 1,720,000
﻿Deferred compensation |  |  | 5,032,000 |  |  | 4,062,000
﻿Other |  |  | 2,605,000 |  |  | 1,187,000
﻿Total deferred tax assets |  |  | 20,746,000 |  |  | 18,517,000
﻿Net deferred tax liabilities |  | $ | 69,918,000 |  | $ | 71,449,000
﻿ At September 24, 2016 refundable current income taxes totaling $2.0 million, are included in the line item “Other current assets” on the Consolidated Balance Sheets. ﻿ Income Tax Expense - Income tax expense differs from the amounts computed by applying the statutory federal rates to income before income taxes. The reasons for the differences are as follows: ﻿
﻿ |  |  |  |  |  |  |  |  |
﻿ |  |  |  |  |  |  |  |  |
﻿ |  | 2017 |  | 2016 |  | 2015
﻿ |  |  |  |  |  |  |  |  |
﻿Federal tax at statutory rate |  | $ | 29,492,000 |  | $ | 29,622,000 |  | $ | 33,060,000
﻿State income tax, net of federal tax benefits |  |  | 2,774,000 |  |  | 2,554,000 |  |  | 4,599,000
﻿Federal tax credits |  |  | (1,024,000) |  |  | (1,312,000) |  |  | (1,544,000)
﻿Other |  |  | (854,000) |  |  | (419,000) |  |  | (1,010,000)
﻿Total |  | $ | 30,388,000 |  | $ | 30,445,000 |  | $ | 35,105,000
﻿ Current and deferred income tax expense (benefit) is as follows: ﻿
﻿ |  |  |  |  |  |  |  |  |
﻿ |  |  |  |  |  |  |  |  |
﻿ |  | 2017 |  | 2016 |  | 2015
﻿ |  |  |  |  |  |  |  |  |
﻿Current: |  |  |  |  |  |  |  |  |
﻿Federal |  | $ | 26,994,000 |  | $ | 19,676,000 |  | $ | 25,578,000
﻿State |  |  | 4,925,000 |  |  | 3,963,000 |  |  | 7,302,000
﻿Total current |  |  | 31,919,000 |  |  | 23,639,000 |  |  | 32,880,000
﻿Deferred: |  |  |  |  |  |  |  |  |
﻿Federal |  |  | (1,104,000) |  |  | 6,828,000 |  |  | 2,373,000
﻿State |  |  | (427,000) |  |  | (22,000) |  |  | (148,000)
﻿Total deferred |  |  | (1,531,000) |  |  | 6,806,000 |  |  | 2,225,000
﻿Total expense |  | $ | 30,388,000 |  | $ | 30,445,000 |  | $ | 35,105,000
﻿ ﻿

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- Definition The entire disclosure for income taxes. Disclosures may include net deferred tax liability or asset recognized in an enterprise's statement of financial position, net change during the year in the total valuation allowance, approximate tax effect of each type of temporary difference and carryforward that gives rise to a significant portion of deferred tax liabilities and deferred tax assets, utilization of a tax carryback, and tax uncertainties information. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-08.(h)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e23780-122690 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32559-109319 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32718-109319 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32639-109319 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=65882285&loc=d3e32537-109319 + Details
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