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Other Comprehensive Income (Loss) (Tables) | 6 Months Ended
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Jun. 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 June 30, 2018 and 2017 are as follows: ﻿ ﻿
﻿ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
﻿ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
﻿ | Three Months Ended |  | Three Months Ended
﻿ | June 30, 2018 |  | June 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 | $ | 494 |  | $ | (140) |  | $ | 354 |  | $ | 456 |  | $ | (187) |  | $ | 269
﻿Foreign currency translation adjustments |  | (914) |  |  | 280 |  |  | (634) |  |  | 1,101 |  |  | (452) |  |  | 649
﻿Unrealized gain (loss) in fair value of investments |  | (1,176) |  |  | 247 |  |  | (929) |  |  | (6) |  |  | 3 |  |  | (3)
﻿Total other comprehensive income (loss) |  | (1,596) |  |  | 387 |  |  | (1,209) |  |  | 1,551 |  |  | (636) |  |  | 915
﻿Total other comprehensive income (loss) attributable to Tutor Perini Corporation | $ | (1,596) |  | $ | 387 |  | $ | (1,209) |  | $ | 1,551 |  | $ | (636) |  | $ | 915
﻿ The tax effects of the components of other comprehensive income (loss) for the six months ended June 30, 2018 and 2017 are as follows: ﻿ ﻿
﻿ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
﻿ |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
﻿ | Six Months Ended |  | Six Months Ended
﻿ | June 30, 2018 |  | June 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: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
﻿Defined benefit pension plan adjustments | $ | 1,026 |  | $ | (291) |  | $ | 735 |  | $ | 912 |  | $ | (375) |  | $ | 537
﻿Foreign currency translation adjustment |  | (2,553) |  |  | 745 |  |  | (1,808) |  |  | 1,009 |  |  | (414) |  |  | 595
﻿Unrealized loss in fair value of investments |  | (1,295) |  |  | 281 |  |  | (1,014) |  |  | (42) |  |  | 18 |  |  | (24)
﻿Total other comprehensive income (loss) |  | (2,822) |  |  | 735 |  |  | (2,087) |  |  | 1,879 |  |  | (771) |  |  | 1,108
﻿Total other comprehensive income (loss) attributable to Tutor Perini Corporation | $ | (2,822) |  | $ | 735 |  | $ | (2,087) |  | $ | 1,879 |  | $ | (771) |  | $ | 1,108
﻿
Schedule Of Changes In AOCI Balances By Component (After-Tax) | The changes in AOCI balances by component (after tax) during the three and six months ended June 30, 2018 are as follows: ﻿ ﻿
﻿ |  |  |  |  |  |  |  |  |  |  |
﻿ |  |  |  |  |  |  |  |  |  |  |
﻿ | Three Months Ended June 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 March 31, 2018 | $ | (39,060) |  | $ | (4,765) |  | $ | 229 |  | $ | (43,596)
﻿Other comprehensive income (loss) before reclassifications |  | — |  |  | (634) |  |  | (929) |  |  | (1,563)
﻿Amounts reclassified from AOCI |  | 354 |  |  | — |  |  | — |  |  | 354
﻿Total other comprehensive income (loss) |  | 354 |  |  | (634) |  |  | (929) |  |  | (1,209)
﻿Balance as of June 30, 2018 | $ | (38,706) |  | $ | (5,399) |  | $ | (700) |  | $ | (44,805)
﻿ ﻿
﻿ |  |  |  |  |  |  |  |  |  |  |
﻿ |  |  |  |  |  |  |  |  |  |  |
﻿ | Six Months Ended June 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 |  | — |  |  | (1,808) |  |  | (1,014) |  |  | (2,822)
﻿Amounts reclassified from AOCI |  | 735 |  |  | — |  |  | — |  |  | 735
﻿Total other comprehensive income (loss) |  | 735 |  |  | (1,808) |  |  | (1,014) |  |  | (2,087)
﻿Balance as of June 30, 2018 | $ | (38,706) |  | $ | (5,399) |  | $ | (700) |  | $ | (44,805)
﻿ The changes in AOCI balance by component (after tax) for the three and six months ended June 30, 2017 are as follows: ﻿
﻿ |  |  |  |  |  |  |  |  |  |  |
﻿ |  |  |  |  |  |  |  |  |  |  |
﻿ | Three Months Ended June 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 March 31, 2017 | $ | (40,597) |  | $ | (4,918) |  | $ | 295 |  | $ | (45,220)
﻿Other comprehensive income (loss) before reclassifications |  | — |  |  | 649 |  |  | (3) |  |  | 646
﻿Amounts reclassified from AOCI |  | 269 |  |  | — |  |  | — |  |  | 269
﻿Total other comprehensive income (loss) |  | 269 |  |  | 649 |  |  | (3) |  |  | 915
﻿Balance as of June 30, 2017 | $ | (40,328) |  | $ | (4,269) |  | $ | 292 |  | $ | (44,305)
﻿ ﻿
﻿ |  |  |  |  |  |  |  |  |  |  |
﻿ |  |  |  |  |  |  |  |  |  |  |
﻿ | Six Months Ended June 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 |  | — |  |  | 595 |  |  | (24) |  |  | 571
﻿Amounts reclassified from AOCI |  | 537 |  |  | — |  |  | — |  |  | 537
﻿Total other comprehensive income (loss) |  | 537 |  |  | 595 |  |  | (24) |  |  | 1,108
﻿Balance as of June 30, 2017 | $ | (40,328) |  | $ | (4,269) |  | $ | 292 |  | $ | (44,305)
﻿

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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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