XML 98 R83.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Commitments and Contingencies (Details) | Oct. 15, 2018 action
--- | ---
Subsequent Event |
Subsequent Event [Line Items] |
Number of qui tam actions | 3

X
- Definition Loss Contingency, Number Of Actions + References No definition available. + Details
Name: | ttek_LossContingencyNumberOfActions
Namespace Prefix: | ttek_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event. + References No definition available. + Details
Name: | us-gaap_SubsequentEventLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_SubsequentEventTypeAxis=us-gaap_SubsequentEventMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |