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Valuation and Qualifying Accounts (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
--- | ---
Sep. 30, 2012 | Sep. 30, 2011
Allowance for doubtful accounts [Member] |  |
Movement in Valuation Allowances and Reserves [Roll Forward] |  |
Valuation allowances and reserves, beginning balance | $ 664 | $ 582
Additions (Reductions) Charged to Expense | 164 | 196
Additions (Reductions) Charged to Other Accounts | 108 | 19
Deductions | (322) | (133)
Valuation allowances and reserves, ending balance | 614 | 664
Inventory obsolescence reserve [Member] |  |
Movement in Valuation Allowances and Reserves [Roll Forward] |  |
Valuation allowances and reserves, beginning balance | 1,398 | 1,191
Additions (Reductions) Charged to Expense | 32 | 171
Additions (Reductions) Charged to Other Accounts | 365 | 267
Deductions | (77) | (231)
Valuation allowances and reserves, ending balance | 1,718 | 1,398
Inventory LIFO reserve [Member] |  |
Movement in Valuation Allowances and Reserves [Roll Forward] |  |
Valuation allowances and reserves, beginning balance | 7,974 | 7,495
Additions (Reductions) Charged to Expense | 1,563 | 479
Additions (Reductions) Charged to Other Accounts | 0 | 0
Deductions | 0 | 0
Valuation allowances and reserves, ending balance | 9,537 | 7,974
Asset impairment reserve [Member] |  |
Movement in Valuation Allowances and Reserves [Roll Forward] |  |
Valuation allowances and reserves, beginning balance | 1,152 | 933
Additions (Reductions) Charged to Expense | 0 | 219
Additions (Reductions) Charged to Other Accounts | 0 | 0
Deductions | (106) | 0
Valuation allowances and reserves, ending balance | 1,046 | 1,152
Deferred tax valuation allowance [Member] |  |
Movement in Valuation Allowances and Reserves [Roll Forward] |  |
Valuation allowances and reserves, beginning balance | 452 | 464
Additions (Reductions) Charged to Expense | 127 | (12)
Additions (Reductions) Charged to Other Accounts | 0 | 0
Deductions | 0 | 0
Valuation allowances and reserves, ending balance | 579 | 452
Workers' compensation reserve [Member] |  |
Movement in Valuation Allowances and Reserves [Roll Forward] |  |
Valuation allowances and reserves, beginning balance | 674 | 945
Additions (Reductions) Charged to Expense | 170 | 20
Additions (Reductions) Charged to Other Accounts | (6) | 30
Deductions | (170) | (321)
Valuation allowances and reserves, ending balance | $ 668 | $ 674

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- Definition Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 09 -Article 12 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e24092-122690 + Details
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- Definition Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs, charged to costs and expenses. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 09 -Article 12 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e24092-122690 + Details
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- Definition Total of allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs, charged to accounts other than costs and expenses in a given period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 09 -Article 12 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e24092-122690 + Details
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- Definition Total of the deductions in a given period to allowances and reserves, the valuation and qualifying accounts that are either netted against the cost of an asset (in order to value it at its carrying value) or that reflect a liability established to represent expected future costs, representing receivables written off as uncollectible and portions of the reserves utilized, respectively. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 09 -Article 12 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6881521&loc=d3e24092-122690 + Details
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