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Other Comprehensive Income (Loss) (Tables) | 9 Months Ended
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Sep. 30, 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 September 30, 2018 and 2017 are as follows: ﻿ ﻿
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﻿ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
﻿ | Three Months Ended |  | Three Months Ended
﻿ | September 30, 2018 |  | September 30, 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 | $ | 513 |  | $ | (148) |  | $ | 365 |  | $ | 456 |  | $ | (187) |  | $ | 269
﻿Foreign currency translation adjustments |  | 519 |  |  | (143) |  |  | 376 |  |  | 1,232 |  |  | (506) |  |  | 726
﻿Unrealized gain (loss) in fair value of investments |  | (173) |  |  | 44 |  |  | (129) |  |  | 21 |  |  | (9) |  |  | 12
﻿Total other comprehensive income (loss) |  | 859 |  |  | (247) |  |  | 612 |  |  | 1,709 |  |  | (702) |  |  | 1,007
﻿Total other comprehensive income (loss) attributable to Tutor Perini Corporation | $ | 859 |  | $ | (247) |  | $ | 612 |  | $ | 1,709 |  | $ | (702) |  | $ | 1,007
﻿ The tax effects of the components of other comprehensive income (loss) for the nine months ended September 30, 2018 and 2017 are as follows: ﻿ ﻿
﻿ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
﻿ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
﻿ | Nine Months Ended |  | Nine Months Ended
﻿ | September 30, 2018 |  | September 30, 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 | $ | 1,539 |  | $ | (439) |  | $ | 1,100 |  | $ | 1,368 |  | $ | (562) |  | $ | 806
﻿Foreign currency translation adjustment |  | (2,034) |  |  | 602 |  |  | (1,432) |  |  | 2,242 |  |  | (921) |  |  | 1,321
﻿Unrealized gain (loss) in fair value of investments |  | (1,468) |  |  | 325 |  |  | (1,143) |  |  | (20) |  |  | 8 |  |  | (12)
﻿Total other comprehensive income (loss) |  | (1,963) |  |  | 488 |  |  | (1,475) |  |  | 3,590 |  |  | (1,475) |  |  | 2,115
﻿Total other comprehensive income (loss) attributable to Tutor Perini Corporation | $ | (1,963) |  | $ | 488 |  | $ | (1,475) |  | $ | 3,590 |  | $ | (1,475) |  | $ | 2,115
﻿
Schedule Of Changes In AOCI Balances By Component (After-Tax) | The changes in AOCI balances by component (after tax) during the three and nine months ended September 30, 2018 are as follows: ﻿ ﻿
﻿ |  |  |  |  |  |  |  |  |  |  |
﻿ |  |  |  |  |  |  |  |  |  |  |
﻿ | Three Months Ended September 30, 2018
﻿ | Defined |  |  |  | Unrealized |  | Accumulated
﻿ | Benefit |  | Foreign |  | Gain (Loss) in |  | Other
﻿ | Pension |  | Currency |  | Fair Value of |  | Comprehensive
﻿(in thousands) | Plan |  | Translation |  | Investments, Net |  | Loss
﻿Attributable to Tutor Perini Corporation: |  |  |  |  |  |  |  |  |  |  |
﻿Balance as of June 30, 2018 | $ | (38,706) |  | $ | (5,399) |  | $ | (700) |  | $ | (44,805)
﻿Other comprehensive income (loss) before reclassifications |  | — |  |  | 376 |  |  | (145) |  |  | 231
﻿Amounts reclassified from AOCI |  | 365 |  |  | — |  |  | 16 |  |  | 381
﻿Total other comprehensive income (loss) |  | 365 |  |  | 376 |  |  | (129) |  |  | 612
﻿Balance as of September 30, 2018 | $ | (38,341) |  | $ | (5,023) |  | $ | (829) |  | $ | (44,193)
﻿ ﻿
﻿ |  |  |  |  |  |  |  |  |  |  |
﻿ |  |  |  |  |  |  |  |  |  |  |
﻿ | Nine Months Ended September 30, 2018
﻿ | Defined |  |  |  | Unrealized |  | Accumulated
﻿ | Benefit |  | Foreign |  | Gain (Loss) 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 income (loss) before reclassifications |  | — |  |  | (1,432) |  |  | (1,159) |  |  | (2,591)
﻿Amounts reclassified from AOCI |  | 1,100 |  |  | — |  |  | 16 |  |  | 1,116
﻿Total other comprehensive income (loss) |  | 1,100 |  |  | (1,432) |  |  | (1,143) |  |  | (1,475)
﻿Balance as of September 30, 2018 | $ | (38,341) |  | $ | (5,023) |  | $ | (829) |  | $ | (44,193)
﻿ The changes in AOCI balance by component (after tax) for the three and nine months ended September 30, 2017 are as follows: ﻿
﻿ |  |  |  |  |  |  |  |  |  |  |
﻿ |  |  |  |  |  |  |  |  |  |  |
﻿ | Three Months Ended September 30, 2017
﻿ | Defined |  |  |  | Unrealized |  | Accumulated
﻿ | Benefit |  | Foreign |  | Gain (Loss) in |  | Other
﻿ | Pension |  | Currency |  | Fair Value of |  | Comprehensive
﻿(in thousands) | Plan |  | Translation |  | Investments, Net |  | Loss
﻿Attributable to Tutor Perini Corporation: |  |  |  |  |  |  |  |  |  |  |
﻿Balance as of June 30, 2017 | $ | (40,328) |  | $ | (4,269) |  | $ | 292 |  | $ | (44,305)
﻿Other comprehensive income (loss) before reclassifications |  | — |  |  | 726 |  |  | 12 |  |  | 738
﻿Amounts reclassified from AOCI |  | 269 |  |  | — |  |  | — |  |  | 269
﻿Total other comprehensive income (loss) |  | 269 |  |  | 726 |  |  | 12 |  |  | 1,007
﻿Balance as of September 30, 2017 | $ | (40,059) |  | $ | (3,543) |  | $ | 304 |  | $ | (43,298)
﻿ ﻿
﻿ |  |  |  |  |  |  |  |  |  |  |
﻿ |  |  |  |  |  |  |  |  |  |  |
﻿ | Nine Months Ended September 30, 2017
﻿ | Defined |  |  |  | Unrealized |  | Accumulated
﻿ | Benefit |  | Foreign |  | Gain (Loss) in |  | Other
﻿ | Pension |  | Currency |  | Value of |  | Comprehensive
﻿(in thousands) | Plan |  | Translation |  | Investments, Net |  | Loss
﻿Attributable to Tutor Perini Corporation: |  |  |  |  |  |  |  |  |  |  |
﻿Balance as of December 31, 2016 | $ | (40,865) |  | $ | (4,864) |  | $ | 316 |  | $ | (45,413)
﻿Other comprehensive income (loss) before reclassifications |  | — |  |  | 1,321 |  |  | (12) |  |  | 1,309
﻿Amounts reclassified from AOCI |  | 806 |  |  | — |  |  | — |  |  | 806
﻿Total other comprehensive income (loss) |  | 806 |  |  | 1,321 |  |  | (12) |  |  | 2,115
﻿Balance as of September 30, 2017 | $ | (40,059) |  | $ | (3,543) |  | $ | 304 |  | $ | (43,298)

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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://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=114867106&loc=d3e526-108580 + Details
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