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Other Comprehensive Income (Loss) (Tables) | 3 Months Ended
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Mar. 31, 2018
Other Comprehensive Income (Loss) [Abstract] |
Schedule Of Tax Effects Of The Components Of Other Comprehensive Income (Loss) | The tax effects of the components of other comprehensive income (loss) for the three months ended March 31, 2018 and 2017 are as follows: ﻿ ﻿
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﻿ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
﻿ | Three Months Ended |  | Three Months Ended
﻿ | March 31, 2018 |  | March 31, 2017
﻿(in thousands) | Before-Tax Amount |  | Tax (Expense) Benefit |  | Net-of-Tax Amount |  | Before-Tax Amount |  | Tax (Expense) Benefit |  | Net-of-Tax Amount
﻿Other comprehensive income (loss): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
﻿Defined benefit pension plan adjustments | $ | 532 |  | $ | (151) |  | $ | 381 |  | $ | 455 |  | $ | (187) |  | $ | 268
﻿Foreign currency translation adjustments |  | (1,638) |  |  | 464 |  |  | (1,174) |  |  | (92) |  |  | 38 |  |  | (54)
﻿Unrealized (loss) gain in fair value of investments |  | (119) |  |  | 34 |  |  | (85) |  |  | (36) |  |  | 15 |  |  | (21)
﻿Total other comprehensive income (loss) |  | (1,225) |  |  | 347 |  |  | (878) |  |  | 327 |  |  | (134) |  |  | 193
﻿Total other comprehensive income (loss) attributable to Tutor Perini Corporation | $ | (1,225) |  | $ | 347 |  | $ | (878) |  | $ | 327 |  | $ | (134) |  | $ | 193
﻿
Schedule Of Changes In AOCI Balances By Component (After-Tax) | The changes in AOCI balances by component (after tax) during the three months ended March 31, 2018 and 2017 are as follows: ﻿ ﻿
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﻿ | Three Months Ended March 31, 2018
﻿ | Defined |  |  |  | Unrealized |  | Accumulated
﻿ | Benefit |  | Foreign |  | Gain in |  | Other
﻿ | Pension |  | Currency |  | Fair Value of |  | Comprehensive
﻿(in thousands) | Plan |  | Translation |  | Investments, Net |  | Loss
﻿Attributable to Tutor Perini Corporation: |  |  |  |  |  |  |  |  |  |  |
﻿Balance as of December 31, 2017 | $ | (39,441) |  | $ | (3,591) |  | $ | 314 |  | $ | (42,718)
﻿Other comprehensive loss before reclassifications |  | — |  |  | (1,174) |  |  | (85) |  |  | (1,259)
﻿Amounts reclassified from AOCI |  | 381 |  |  | — |  |  | — |  |  | 381
﻿Total other comprehensive income (loss) |  | 381 |  |  | (1,174) |  |  | (85) |  |  | (878)
﻿Balance as of March 31, 2018 | $ | (39,060) |  | $ | (4,765) |  | $ | 229 |  | $ | (43,596)
﻿ ﻿
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﻿ | Three Months Ended March 31, 2017
﻿ | Defined |  |  |  | Unrealized |  | Accumulated
﻿ | Benefit |  | Foreign |  | Gain in |  | Other
﻿ | Pension |  | Currency |  | Fair Value of |  | Comprehensive
﻿(in thousands) | Plan |  | Translation |  | Investments, Net |  | Loss
﻿Attributable to Tutor Perini Corporation: |  |  |  |  |  |  |  |  |  |  |
﻿Balance as or December 31, 2016 | $ | (40,865) |  | $ | (4,864) |  | $ | 316 |  | $ | (45,413)
﻿Other comprehensive loss before reclassifications |  | — |  |  | (54) |  |  | (21) |  |  | (75)
﻿Amounts reclassified from AOCI |  | 268 |  |  | — |  |  | — |  |  | 268
﻿Total other comprehensive income (loss) |  | 268 |  |  | (54) |  |  | (21) |  |  | 193
﻿Balance as of March 31, 2017 | $ | (40,597) |  | $ | (4,918) |  | $ | 295 |  | $ | (45,220)
﻿

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=84228862&loc=SL7669686-108580 + Details
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- Definition Tabular disclosure of components of comprehensive income (loss). Includes, but is not limited to, foreign currency translation adjustments, foreign currency transactions designated as economic hedges of a net investment in foreign entity, gain (loss) and prior service cost (credit) for pension plans and other postretirement benefit plans. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=84228862&loc=d3e526-108580 + Details
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