Employee Benefit Plans (Summary of Changes in the Fair Value of the Level 3 Plan Assets) (Details) (USD $)	12 Months Ended
Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Change in Fair Value of Plan Assets
Balance at end of year	$ 75,956,000	$ 72,617,000
Significant Unobservable Inputs (Level 3) [Member]
Change in Fair Value of Plan Assets
Balance at beginning of year	23,724,000
Balance at end of year	25,131,000	23,724,000
Transfer comprised of hedge funds redeemable period of time	2,700,000	3,400,000
Hedge Fund Investments: Long-Short Equity Fund [Member]
Change in Fair Value of Plan Assets
Balance at end of year	28,633,000	26,221,000
Hedge Fund Investments: Long-Short Equity Fund [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Change in Fair Value of Plan Assets
Balance at end of year	12,755,000	11,655,000
Hedge Fund Investments: Event Driven Fund [Member]
Change in Fair Value of Plan Assets
Balance at end of year	13,033,000	14,680,000
Hedge Fund Investments: Event Driven Fund [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Change in Fair Value of Plan Assets
Balance at end of year	9,562,000	8,752,000
Hedge Fund Investment: Distressed Credit [Member]
Change in Fair Value of Plan Assets
Balance at end of year	1,320,000	1,429,000
Hedge Fund Investment: Distressed Credit [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Change in Fair Value of Plan Assets
Balance at end of year	1,320,000	1,429,000
Hedge Fund Investments: Multi-Strategy Fund [Member]
Change in Fair Value of Plan Assets
Balance at end of year	1,494,000	1,888,000
Hedge Fund Investments: Multi-Strategy Fund [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Change in Fair Value of Plan Assets
Balance at end of year	1,494,000	1,888,000
Employee Pension Plans [Member]
Change in Fair Value of Plan Assets
Balance at beginning of year			66,137,000
Balance at end of year	75,956,000	72,617,000	66,137,000
Employee Pension Plans [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Change in Fair Value of Plan Assets
Balance at beginning of year	23,724,000	21,653,000
Realized gains (losses)	16,000	(12,000)
Unrealized gains (losses)	1,464,000	4,604,000
Purchases	1,076,000	1,817,000
Sales	(3,839,000)	(895,000)
Transfer to Level 2	2,690,000	(3,443,000)
Balance at end of year	25,131,000	23,724,000
Employee Pension Plans [Member] \| Hedge Fund Investments: Long-Short Equity Fund [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Change in Fair Value of Plan Assets
Balance at beginning of year	10,863,000	9,992,000
Unrealized gains (losses)	843,000	2,971,000
Purchases	1,049,000	1,343,000
Transfer to Level 2		(3,443,000)
Balance at end of year	12,755,000	10,863,000
Employee Pension Plans [Member] \| Hedge Fund Investments: Event Driven Fund [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Change in Fair Value of Plan Assets
Balance at beginning of year	8,863,000	7,152,000
Unrealized gains (losses)	505,000	1,252,000
Purchases	16,000	459,000
Sales	(2,512,000)
Transfer to Level 2	2,690,000
Balance at end of year	9,562,000	8,863,000
Employee Pension Plans [Member] \| Hedge Fund Investment: Distressed Credit [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Change in Fair Value of Plan Assets
Balance at beginning of year	2,199,000	2,559,000
Realized gains (losses)	13,000	(7,000)
Unrealized gains (losses)	57,000	158,000
Purchases	5,000	6,000
Sales	(954,000)	(517,000)
Balance at end of year	1,320,000	2,199,000
Employee Pension Plans [Member] \| Hedge Fund Investments: Multi-Strategy Fund [Member] \| Significant Unobservable Inputs (Level 3) [Member]
Change in Fair Value of Plan Assets
Balance at beginning of year	1,799,000	1,950,000
Realized gains (losses)	3,000	(5,000)
Unrealized gains (losses)	59,000	223,000
Purchases	6,000	9,000
Sales	(373,000)	(378,000)
Balance at end of year	$ 1,494,000	$ 1,799,000

Amount of increase in plan assets due to purchases.

No definition available.

Name:	tpc_DefinedBenefitPlanPurchasesPlanAssets
Namespace Prefix:	tpc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Amount of decrease in plan assets from sales of plan obligations.

+ References

No definition available.

+ Details

Name:	tpc_DefinedBenefitPlanSalesPlanAssets
Namespace Prefix:	tpc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Represents the redemption period of certain hedge funds that were transferred between measurement levels during the period.

+ References

No definition available.

+ Details

Name:	tpc_DefinedBenefitPlanTransfersBetweenMeasurementLevelsRedemptionPeriod
Namespace Prefix:	tpc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Actual return on plan assets, separately identifying the amount related to assets sold during the period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (d)(iv)(02)(A)

-URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 5

-Subparagraph (c)(iv)(02)(A)

-URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e2446-114920

+ Details

Name:	us-gaap_DefinedBenefitPlanActualReturnOnPlanAssetsSoldDuringPeriod
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

Actual return on plan assets, separately identifying the amount related to assets still held at the reporting date.

+ References

+ Details

Name:	us-gaap_DefinedBenefitPlanActualReturnOnPlanAssetsStillHeld
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	us-gaap_DefinedBenefitPlanChangeInFairValueOfPlanAssetsRollForward
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

Assets, usually stocks, bonds, and other investments, that have been segregated and restricted (usually in a trust) to provide benefits, at their fair value as of the measurement date. Plan assets include amounts contributed by the employer (and by employees for a contributory plan) and amounts earned from investing the contributions, less benefits paid. If a plan has liabilities other than for benefits, those non-benefit obligations may be considered as reductions of plan assets.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 30

-Section 35

-Paragraph 50

-URI http://asc.fasb.org/extlink&oid=29635418&loc=d3e12355-114930

+ Details

Name:	us-gaap_DefinedBenefitPlanFairValueOfPlanAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Transfers in and out of Level 3. For example, transfers due to changes in the observability of significant inputs.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 1

-Subparagraph (d)(iv)(02)(C)

-URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 715

-SubTopic 20

-Section 50

-Paragraph 5

-Subparagraph (c)(iv)(02)(C)

-URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e2446-114920

+ Details

Name:	us-gaap_DefinedBenefitPlanTransfersBetweenMeasurementLevels
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Details

Name:	us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=tpc_HedgeFundsDistressedCreditMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_HedgeFundsEquityMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_HedgeFundsEventDrivenMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DefinedBenefitPlanByPlanAssetCategoriesAxis=us-gaap_HedgeFundsMultistrategyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_DefinedBenefitPlansDisclosuresDefinedBenefitPlansAxis=us-gaap_PensionPlansDefinedBenefitMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

- Details

Name:	us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel3Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: