XML 59 R41.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Reportable Segments (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 6 Months Ended |
--- | --- | --- | ---
Mar. 29, 2015 | Mar. 30, 2014 | Mar. 29, 2015 | Mar. 30, 2014 | Sep. 28, 2014
Financial information concerning reportable segments |  |  |  |  |
Revenue | $ 564,763 us-gaap_SalesRevenueServicesNet | $ 586,285 us-gaap_SalesRevenueServicesNet | $ 1,145,819 us-gaap_SalesRevenueServicesNet | $ 1,232,133 us-gaap_SalesRevenueServicesNet |
Operating income (loss) | 30,398 us-gaap_OperatingIncomeLoss | 46,186 us-gaap_OperatingIncomeLoss | 67,010 us-gaap_OperatingIncomeLoss | 89,904 us-gaap_OperatingIncomeLoss |
Depreciation | 5,929 us-gaap_Depreciation | 6,578 us-gaap_Depreciation | 12,793 us-gaap_Depreciation | 13,707 us-gaap_Depreciation |
Total assets | 1,643,947 us-gaap_Assets |  | 1,643,947 us-gaap_Assets |  | 1,776,404 us-gaap_Assets
Inter-segment elimination |  |  |  |  |
Financial information concerning reportable segments |  |  |  |  |
Revenue | (18,939)us-gaap_SalesRevenueServicesNet / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember | (20,871)us-gaap_SalesRevenueServicesNet / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember | (37,654)us-gaap_SalesRevenueServicesNet / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember | (45,699)us-gaap_SalesRevenueServicesNet / us-gaap_ConsolidationItemsAxis = us-gaap_IntersegmentEliminationMember |
Corporate |  |  |  |  |
Financial information concerning reportable segments |  |  |  |  |
Operating income (loss) | (5,145)us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember | 16,434 us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember | (12,665)us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember | 8,799 us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember |
Depreciation | 400 us-gaap_Depreciation / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember | 737 us-gaap_Depreciation / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember | 1,692 us-gaap_Depreciation / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember | 1,491 us-gaap_Depreciation / us-gaap_ConsolidationItemsAxis = us-gaap_CorporateNonSegmentMember |
Corporate |  |  |  |  |
Financial information concerning reportable segments |  |  |  |  |
Total assets | 864,208 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = ttek_CorporateNonSegmentIntersegmentEliminationMember |  | 864,208 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = ttek_CorporateNonSegmentIntersegmentEliminationMember |  | 929,620 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = ttek_CorporateNonSegmentIntersegmentEliminationMember
WEI | Operating segment |  |  |  |  |
Financial information concerning reportable segments |  |  |  |  |
Revenue | 223,366 us-gaap_SalesRevenueServicesNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = ttek_WaterEnvironmentAndInfrastructureMember | 223,977 us-gaap_SalesRevenueServicesNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = ttek_WaterEnvironmentAndInfrastructureMember | 457,033 us-gaap_SalesRevenueServicesNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = ttek_WaterEnvironmentAndInfrastructureMember | 453,307 us-gaap_SalesRevenueServicesNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = ttek_WaterEnvironmentAndInfrastructureMember |
Operating income (loss) | 15,787 us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = ttek_WaterEnvironmentAndInfrastructureMember | 18,296 us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = ttek_WaterEnvironmentAndInfrastructureMember | 37,620 us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = ttek_WaterEnvironmentAndInfrastructureMember | 40,521 us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = ttek_WaterEnvironmentAndInfrastructureMember |
Depreciation | 1,189 us-gaap_Depreciation / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = ttek_WaterEnvironmentAndInfrastructureMember | 1,362 us-gaap_Depreciation / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = ttek_WaterEnvironmentAndInfrastructureMember | 2,422 us-gaap_Depreciation / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = ttek_WaterEnvironmentAndInfrastructureMember | 2,777 us-gaap_Depreciation / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = ttek_WaterEnvironmentAndInfrastructureMember |
Total assets | 253,282 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = ttek_WaterEnvironmentAndInfrastructureMember |  | 253,282 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = ttek_WaterEnvironmentAndInfrastructureMember |  | 302,877 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = ttek_WaterEnvironmentAndInfrastructureMember
RME | Operating segment |  |  |  |  |
Financial information concerning reportable segments |  |  |  |  |
Revenue | 342,185 us-gaap_SalesRevenueServicesNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = ttek_ResourceManagementAndEnergyMember | 342,897 us-gaap_SalesRevenueServicesNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = ttek_ResourceManagementAndEnergyMember | 673,859 us-gaap_SalesRevenueServicesNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = ttek_ResourceManagementAndEnergyMember | 702,161 us-gaap_SalesRevenueServicesNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = ttek_ResourceManagementAndEnergyMember |
Operating income (loss) | 19,751 us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = ttek_ResourceManagementAndEnergyMember | 10,726 us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = ttek_ResourceManagementAndEnergyMember | 45,471 us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = ttek_ResourceManagementAndEnergyMember | 43,985 us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = ttek_ResourceManagementAndEnergyMember |
Depreciation | 3,665 us-gaap_Depreciation / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = ttek_ResourceManagementAndEnergyMember | 3,708 us-gaap_Depreciation / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = ttek_ResourceManagementAndEnergyMember | 7,344 us-gaap_Depreciation / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = ttek_ResourceManagementAndEnergyMember | 7,870 us-gaap_Depreciation / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = ttek_ResourceManagementAndEnergyMember |
Total assets | 435,039 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = ttek_ResourceManagementAndEnergyMember |  | 435,039 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = ttek_ResourceManagementAndEnergyMember |  | 442,911 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = ttek_ResourceManagementAndEnergyMember
RCM | Operating segment |  |  |  |  |
Financial information concerning reportable segments |  |  |  |  |
Revenue | 18,151 us-gaap_SalesRevenueServicesNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = ttek_RemediationAndConstructionManagementMember | 40,282 us-gaap_SalesRevenueServicesNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = ttek_RemediationAndConstructionManagementMember | 52,581 us-gaap_SalesRevenueServicesNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = ttek_RemediationAndConstructionManagementMember | 122,364 us-gaap_SalesRevenueServicesNet / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = ttek_RemediationAndConstructionManagementMember |
Operating income (loss) | 5 us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = ttek_RemediationAndConstructionManagementMember | 730 us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = ttek_RemediationAndConstructionManagementMember | (3,416)us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = ttek_RemediationAndConstructionManagementMember | (3,401)us-gaap_OperatingIncomeLoss / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = ttek_RemediationAndConstructionManagementMember |
Depreciation | 675 us-gaap_Depreciation / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = ttek_RemediationAndConstructionManagementMember | 771 us-gaap_Depreciation / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = ttek_RemediationAndConstructionManagementMember | 1,335 us-gaap_Depreciation / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = ttek_RemediationAndConstructionManagementMember | 1,569 us-gaap_Depreciation / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = ttek_RemediationAndConstructionManagementMember |
Total assets | $ 91,418 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = ttek_RemediationAndConstructionManagementMember |  | $ 91,418 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = ttek_RemediationAndConstructionManagementMember |  | $ 100,996 us-gaap_Assets / us-gaap_ConsolidationItemsAxis = us-gaap_OperatingSegmentsMember / us-gaap_StatementBusinessSegmentsAxis = ttek_RemediationAndConstructionManagementMember

X
- Definition Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.18) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 12 -Article 7 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 18 -Article 5 + Details
Name: | us-gaap_Assets
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of expense recognized in the current period that reflects the allocation of the cost of tangible assets over the assets' useful lives. Includes production and non-production related depreciation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
Name: | us-gaap_Depreciation
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The net result for the period of deducting operating expenses from operating revenues. + References No definition available. + Details
Name: | us-gaap_OperatingIncomeLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Aggregate revenue during the period from services rendered in the normal course of business, after deducting allowances and discounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1(d)) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 + Details
Name: | us-gaap_SalesRevenueServicesNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_SegmentReportingInformationLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_ConsolidationItemsAxis=ttek_CorporateNonSegmentIntersegmentEliminationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConsolidationItemsAxis=us-gaap_CorporateNonSegmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConsolidationItemsAxis=us-gaap_IntersegmentEliminationMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=ttek_RemediationAndConstructionManagementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=ttek_ResourceManagementAndEnergyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementBusinessSegmentsAxis=ttek_WaterEnvironmentAndInfrastructureMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |