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v2.4.1.9

Supplemental Consolidating Financial Statements - Balance Sheet (Details) (USD $) In Thousands, unless otherwise specified | Jan. 24, 2015 | Jul. 26, 2014 | Jan. 25, 2014 | Jul. 27, 2013
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Current assets: |  |  |  |
Cash and equivalents | $ 18,428 us-gaap_CashAndCashEquivalentsAtCarryingValue | $ 20,672 us-gaap_CashAndCashEquivalentsAtCarryingValue | $ 16,344 us-gaap_CashAndCashEquivalentsAtCarryingValue | $ 18,607 us-gaap_CashAndCashEquivalentsAtCarryingValue
Accounts receivable, net | 267,286 us-gaap_AccountsReceivableNetCurrent | 272,741 us-gaap_AccountsReceivableNetCurrent |  |
Costs and estimated earnings in excess of billings | 212,314 dy_CostsAndEstimatedEarningsInExcessOfBillings | 230,569 dy_CostsAndEstimatedEarningsInExcessOfBillings |  |
Inventories | 43,768 us-gaap_InventoryNet | 49,095 us-gaap_InventoryNet |  |
Deferred tax assets, net | 18,732 us-gaap_DeferredTaxAssetsNetCurrent | 19,932 us-gaap_DeferredTaxAssetsNetCurrent |  |
Other current assets | 23,837 us-gaap_OtherAssetsCurrent | 12,727 us-gaap_OtherAssetsCurrent |  |
Total current assets | 584,365 us-gaap_AssetsCurrent | 605,736 us-gaap_AssetsCurrent |  |
Property and equipment, net | 207,148 us-gaap_PropertyPlantAndEquipmentNet | 205,413 us-gaap_PropertyPlantAndEquipmentNet |  |
Goodwill | 269,465 us-gaap_Goodwill | 269,088 us-gaap_Goodwill |  |
Intangible assets, net | 114,173 us-gaap_IntangibleAssetsNetExcludingGoodwill | 116,116 us-gaap_IntangibleAssetsNetExcludingGoodwill |  |
Deferred tax assets, net non-current | 0 us-gaap_DeferredTaxAssetsNetNoncurrent | 0 us-gaap_DeferredTaxAssetsNetNoncurrent |  |
Investment in subsidiaries | 0 dy_InvestmentInWhollyOwnedSubsidiaries | 0 dy_InvestmentInWhollyOwnedSubsidiaries |  |
Intercompany receivables | 0 dy_IntercompanyReceivablesAggregate |  |  |
Other | 18,382 us-gaap_OtherAssetsNoncurrent | 16,001 us-gaap_OtherAssetsNoncurrent |  |
Total non-current assets | 609,168 us-gaap_AssetsNoncurrent | 606,618 us-gaap_AssetsNoncurrent |  |
Total assets | 1,193,533 us-gaap_Assets | 1,212,354 us-gaap_Assets |  |
Current liabilities: |  |  |  |
Accounts payable | 52,114 us-gaap_AccountsPayableCurrent | 63,318 us-gaap_AccountsPayableCurrent |  |
Current portion of debt | 12,500 us-gaap_DebtCurrent | 10,938 us-gaap_DebtCurrent |  |
Billings in excess of costs and estimated earnings | 16,422 dy_BillingsInExcessOfCostsAndEstimatedEarnings | 13,882 dy_BillingsInExcessOfCostsAndEstimatedEarnings |  |
Accrued insurance claims | 34,185 dy_AccruedInsuranceClaimsCurrent | 32,260 dy_AccruedInsuranceClaimsCurrent |  |
Accrued insurance claims | 0 us-gaap_DeferredTaxLiabilitiesCurrent | 0 us-gaap_DeferredTaxLiabilitiesCurrent |  |
Other accrued liabilities | 62,991 us-gaap_OtherAccruedLiabilitiesCurrent | 76,134 us-gaap_OtherAccruedLiabilitiesCurrent |  |
Total current liabilities | 178,212 us-gaap_LiabilitiesCurrent | 196,532 us-gaap_LiabilitiesCurrent |  |
Long-term debt | 421,418 us-gaap_LongTermDebtAndCapitalLeaseObligations | 446,863 us-gaap_LongTermDebtAndCapitalLeaseObligations |  |
Accrued insurance claims | 38,348 dy_AccruedInsuranceClaimsNoncurrent | 33,782 dy_AccruedInsuranceClaimsNoncurrent |  |
Deferred tax liabilities, net non-current | 45,596 us-gaap_DeferredTaxLiabilitiesNoncurrent | 45,361 us-gaap_DeferredTaxLiabilitiesNoncurrent |  |
Intercompany payables | 0 dy_IntercompanyPayablesAggregate | 0 dy_IntercompanyPayablesAggregate |  |
Other liabilities | 5,051 us-gaap_OtherLiabilitiesNoncurrent | 4,882 us-gaap_OtherLiabilitiesNoncurrent |  |
Total liabilities | 688,625 us-gaap_Liabilities | 727,420 us-gaap_Liabilities |  |
Total stockholders' equity | 504,908 us-gaap_StockholdersEquity | 484,934 us-gaap_StockholdersEquity |  |
Total liabilities and stockholders' equity | 1,193,533 us-gaap_LiabilitiesAndStockholdersEquity | 1,212,354 us-gaap_LiabilitiesAndStockholdersEquity |  |
Parent |  |  |  |
Current assets: |  |  |  |
Cash and equivalents | 0 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 0 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 0 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 0 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = us-gaap_ParentCompanyMember
Accounts receivable, net | 0 us-gaap_AccountsReceivableNetCurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 0 us-gaap_AccountsReceivableNetCurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Costs and estimated earnings in excess of billings | 0 dy_CostsAndEstimatedEarningsInExcessOfBillings / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 0 dy_CostsAndEstimatedEarningsInExcessOfBillings / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Inventories | 0 us-gaap_InventoryNet / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 0 us-gaap_InventoryNet / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Deferred tax assets, net | 3,602 us-gaap_DeferredTaxAssetsNetCurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 3,822 us-gaap_DeferredTaxAssetsNetCurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Other current assets | 17,012 us-gaap_OtherAssetsCurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 4,956 us-gaap_OtherAssetsCurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Total current assets | 20,614 us-gaap_AssetsCurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 8,778 us-gaap_AssetsCurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Property and equipment, net | 18,678 us-gaap_PropertyPlantAndEquipmentNet / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 18,108 us-gaap_PropertyPlantAndEquipmentNet / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Goodwill | 0 us-gaap_Goodwill / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 0 us-gaap_Goodwill / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Intangible assets, net | 0 us-gaap_IntangibleAssetsNetExcludingGoodwill / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 0 us-gaap_IntangibleAssetsNetExcludingGoodwill / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Deferred tax assets, net non-current | 705 us-gaap_DeferredTaxAssetsNetNoncurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 182 us-gaap_DeferredTaxAssetsNetNoncurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Investment in subsidiaries | 839,856 dy_InvestmentInWhollyOwnedSubsidiaries / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 809,617 dy_InvestmentInWhollyOwnedSubsidiaries / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Intercompany receivables | 0 dy_IntercompanyReceivablesAggregate / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 0 dy_IntercompanyReceivablesAggregate / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Other | 10,625 us-gaap_OtherAssetsNoncurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 7,748 us-gaap_OtherAssetsNoncurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Total non-current assets | 869,864 us-gaap_AssetsNoncurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 835,655 us-gaap_AssetsNoncurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Total assets | 890,478 us-gaap_Assets / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 844,433 us-gaap_Assets / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Current liabilities: |  |  |  |
Accounts payable | 977 us-gaap_AccountsPayableCurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 3,083 us-gaap_AccountsPayableCurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Current portion of debt | 12,500 us-gaap_DebtCurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 10,938 us-gaap_DebtCurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Billings in excess of costs and estimated earnings | 0 dy_BillingsInExcessOfCostsAndEstimatedEarnings / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 0 dy_BillingsInExcessOfCostsAndEstimatedEarnings / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Accrued insurance claims | 162 dy_AccruedInsuranceClaimsCurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 612 dy_AccruedInsuranceClaimsCurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Accrued insurance claims | 0 us-gaap_DeferredTaxLiabilitiesCurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 0 us-gaap_DeferredTaxLiabilitiesCurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Other accrued liabilities | 8,203 us-gaap_OtherAccruedLiabilitiesCurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 12,668 us-gaap_OtherAccruedLiabilitiesCurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Total current liabilities | 21,842 us-gaap_LiabilitiesCurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 27,301 us-gaap_LiabilitiesCurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Long-term debt | 140,875 us-gaap_LongTermDebtAndCapitalLeaseObligations / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 166,125 us-gaap_LongTermDebtAndCapitalLeaseObligations / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Accrued insurance claims | 86 dy_AccruedInsuranceClaimsNoncurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 778 dy_AccruedInsuranceClaimsNoncurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Deferred tax liabilities, net non-current | 0 us-gaap_DeferredTaxLiabilitiesNoncurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 0 us-gaap_DeferredTaxLiabilitiesNoncurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Intercompany payables | 219,607 dy_IntercompanyPayablesAggregate / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 162,127 dy_IntercompanyPayablesAggregate / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Other liabilities | 3,160 us-gaap_OtherLiabilitiesNoncurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 3,168 us-gaap_OtherLiabilitiesNoncurrent / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Total liabilities | 385,570 us-gaap_Liabilities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 359,499 us-gaap_Liabilities / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Total stockholders' equity | 504,908 us-gaap_StockholdersEquity / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 484,934 us-gaap_StockholdersEquity / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Total liabilities and stockholders' equity | 890,478 us-gaap_LiabilitiesAndStockholdersEquity / dei_LegalEntityAxis = us-gaap_ParentCompanyMember | 844,433 us-gaap_LiabilitiesAndStockholdersEquity / dei_LegalEntityAxis = us-gaap_ParentCompanyMember |  |
Issuer |  |  |  |
Current assets: |  |  |  |
Cash and equivalents | 0 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = dy_IssuerMember | 0 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = dy_IssuerMember | 0 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = dy_IssuerMember | 0 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = dy_IssuerMember
Accounts receivable, net | 0 us-gaap_AccountsReceivableNetCurrent / dei_LegalEntityAxis = dy_IssuerMember | 0 us-gaap_AccountsReceivableNetCurrent / dei_LegalEntityAxis = dy_IssuerMember |  |
Costs and estimated earnings in excess of billings | 0 dy_CostsAndEstimatedEarningsInExcessOfBillings / dei_LegalEntityAxis = dy_IssuerMember | 0 dy_CostsAndEstimatedEarningsInExcessOfBillings / dei_LegalEntityAxis = dy_IssuerMember |  |
Inventories | 0 us-gaap_InventoryNet / dei_LegalEntityAxis = dy_IssuerMember | 0 us-gaap_InventoryNet / dei_LegalEntityAxis = dy_IssuerMember |  |
Deferred tax assets, net | 0 us-gaap_DeferredTaxAssetsNetCurrent / dei_LegalEntityAxis = dy_IssuerMember | 0 us-gaap_DeferredTaxAssetsNetCurrent / dei_LegalEntityAxis = dy_IssuerMember |  |
Other current assets | 42 us-gaap_OtherAssetsCurrent / dei_LegalEntityAxis = dy_IssuerMember | 16 us-gaap_OtherAssetsCurrent / dei_LegalEntityAxis = dy_IssuerMember |  |
Total current assets | 42 us-gaap_AssetsCurrent / dei_LegalEntityAxis = dy_IssuerMember | 16 us-gaap_AssetsCurrent / dei_LegalEntityAxis = dy_IssuerMember |  |
Property and equipment, net | 0 us-gaap_PropertyPlantAndEquipmentNet / dei_LegalEntityAxis = dy_IssuerMember | 0 us-gaap_PropertyPlantAndEquipmentNet / dei_LegalEntityAxis = dy_IssuerMember |  |
Goodwill | 0 us-gaap_Goodwill / dei_LegalEntityAxis = dy_IssuerMember | 0 us-gaap_Goodwill / dei_LegalEntityAxis = dy_IssuerMember |  |
Intangible assets, net | 0 us-gaap_IntangibleAssetsNetExcludingGoodwill / dei_LegalEntityAxis = dy_IssuerMember | 0 us-gaap_IntangibleAssetsNetExcludingGoodwill / dei_LegalEntityAxis = dy_IssuerMember |  |
Deferred tax assets, net non-current | 0 us-gaap_DeferredTaxAssetsNetNoncurrent / dei_LegalEntityAxis = dy_IssuerMember | 0 us-gaap_DeferredTaxAssetsNetNoncurrent / dei_LegalEntityAxis = dy_IssuerMember |  |
Investment in subsidiaries | 1,595,469 dy_InvestmentInWhollyOwnedSubsidiaries / dei_LegalEntityAxis = dy_IssuerMember | 1,540,338 dy_InvestmentInWhollyOwnedSubsidiaries / dei_LegalEntityAxis = dy_IssuerMember |  |
Intercompany receivables | 0 dy_IntercompanyReceivablesAggregate / dei_LegalEntityAxis = dy_IssuerMember | 0 dy_IntercompanyReceivablesAggregate / dei_LegalEntityAxis = dy_IssuerMember |  |
Other | 5,295 us-gaap_OtherAssetsNoncurrent / dei_LegalEntityAxis = dy_IssuerMember | 5,636 us-gaap_OtherAssetsNoncurrent / dei_LegalEntityAxis = dy_IssuerMember |  |
Total non-current assets | 1,600,764 us-gaap_AssetsNoncurrent / dei_LegalEntityAxis = dy_IssuerMember | 1,545,974 us-gaap_AssetsNoncurrent / dei_LegalEntityAxis = dy_IssuerMember |  |
Total assets | 1,600,806 us-gaap_Assets / dei_LegalEntityAxis = dy_IssuerMember | 1,545,990 us-gaap_Assets / dei_LegalEntityAxis = dy_IssuerMember |  |
Current liabilities: |  |  |  |
Accounts payable | 0 us-gaap_AccountsPayableCurrent / dei_LegalEntityAxis = dy_IssuerMember | 0 us-gaap_AccountsPayableCurrent / dei_LegalEntityAxis = dy_IssuerMember |  |
Current portion of debt | 0 us-gaap_DebtCurrent / dei_LegalEntityAxis = dy_IssuerMember | 0 us-gaap_DebtCurrent / dei_LegalEntityAxis = dy_IssuerMember |  |
Billings in excess of costs and estimated earnings | 0 dy_BillingsInExcessOfCostsAndEstimatedEarnings / dei_LegalEntityAxis = dy_IssuerMember | 0 dy_BillingsInExcessOfCostsAndEstimatedEarnings / dei_LegalEntityAxis = dy_IssuerMember |  |
Accrued insurance claims | 0 dy_AccruedInsuranceClaimsCurrent / dei_LegalEntityAxis = dy_IssuerMember | 0 dy_AccruedInsuranceClaimsCurrent / dei_LegalEntityAxis = dy_IssuerMember |  |
Accrued insurance claims | 80 us-gaap_DeferredTaxLiabilitiesCurrent / dei_LegalEntityAxis = dy_IssuerMember | 80 us-gaap_DeferredTaxLiabilitiesCurrent / dei_LegalEntityAxis = dy_IssuerMember |  |
Other accrued liabilities | 532 us-gaap_OtherAccruedLiabilitiesCurrent / dei_LegalEntityAxis = dy_IssuerMember | 566 us-gaap_OtherAccruedLiabilitiesCurrent / dei_LegalEntityAxis = dy_IssuerMember |  |
Total current liabilities | 612 us-gaap_LiabilitiesCurrent / dei_LegalEntityAxis = dy_IssuerMember | 646 us-gaap_LiabilitiesCurrent / dei_LegalEntityAxis = dy_IssuerMember |  |
Long-term debt | 280,543 us-gaap_LongTermDebtAndCapitalLeaseObligations / dei_LegalEntityAxis = dy_IssuerMember | 280,738 us-gaap_LongTermDebtAndCapitalLeaseObligations / dei_LegalEntityAxis = dy_IssuerMember |  |
Accrued insurance claims | 0 dy_AccruedInsuranceClaimsNoncurrent / dei_LegalEntityAxis = dy_IssuerMember | 0 dy_AccruedInsuranceClaimsNoncurrent / dei_LegalEntityAxis = dy_IssuerMember |  |
Deferred tax liabilities, net non-current | 432 us-gaap_DeferredTaxLiabilitiesNoncurrent / dei_LegalEntityAxis = dy_IssuerMember | 432 us-gaap_DeferredTaxLiabilitiesNoncurrent / dei_LegalEntityAxis = dy_IssuerMember |  |
Intercompany payables | 479,363 dy_IntercompanyPayablesAggregate / dei_LegalEntityAxis = dy_IssuerMember | 454,557 dy_IntercompanyPayablesAggregate / dei_LegalEntityAxis = dy_IssuerMember |  |
Other liabilities | 0 us-gaap_OtherLiabilitiesNoncurrent / dei_LegalEntityAxis = dy_IssuerMember | 0 us-gaap_OtherLiabilitiesNoncurrent / dei_LegalEntityAxis = dy_IssuerMember |  |
Total liabilities | 760,950 us-gaap_Liabilities / dei_LegalEntityAxis = dy_IssuerMember | 736,373 us-gaap_Liabilities / dei_LegalEntityAxis = dy_IssuerMember |  |
Total stockholders' equity | 839,856 us-gaap_StockholdersEquity / dei_LegalEntityAxis = dy_IssuerMember | 809,617 us-gaap_StockholdersEquity / dei_LegalEntityAxis = dy_IssuerMember |  |
Total liabilities and stockholders' equity | 1,600,806 us-gaap_LiabilitiesAndStockholdersEquity / dei_LegalEntityAxis = dy_IssuerMember | 1,545,990 us-gaap_LiabilitiesAndStockholdersEquity / dei_LegalEntityAxis = dy_IssuerMember |  |
Subsidiary Guarantors |  |  |  |
Current assets: |  |  |  |
Cash and equivalents | 17,080 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 19,739 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 15,212 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 18,166 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember
Accounts receivable, net | 265,297 us-gaap_AccountsReceivableNetCurrent / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 269,760 us-gaap_AccountsReceivableNetCurrent / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |  |
Costs and estimated earnings in excess of billings | 210,921 dy_CostsAndEstimatedEarningsInExcessOfBillings / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 228,541 dy_CostsAndEstimatedEarningsInExcessOfBillings / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |  |
Inventories | 43,768 us-gaap_InventoryNet / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 49,095 us-gaap_InventoryNet / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |  |
Deferred tax assets, net | 15,228 us-gaap_DeferredTaxAssetsNetCurrent / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 16,193 us-gaap_DeferredTaxAssetsNetCurrent / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |  |
Other current assets | 6,503 us-gaap_OtherAssetsCurrent / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 7,237 us-gaap_OtherAssetsCurrent / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |  |
Total current assets | 558,797 us-gaap_AssetsCurrent / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 590,565 us-gaap_AssetsCurrent / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |  |
Property and equipment, net | 170,150 us-gaap_PropertyPlantAndEquipmentNet / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 171,158 us-gaap_PropertyPlantAndEquipmentNet / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |  |
Goodwill | 269,465 us-gaap_Goodwill / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 269,088 us-gaap_Goodwill / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |  |
Intangible assets, net | 113,596 us-gaap_IntangibleAssetsNetExcludingGoodwill / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 115,483 us-gaap_IntangibleAssetsNetExcludingGoodwill / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |  |
Deferred tax assets, net non-current | 3,618 us-gaap_DeferredTaxAssetsNetNoncurrent / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 3,884 us-gaap_DeferredTaxAssetsNetNoncurrent / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |  |
Investment in subsidiaries | 1,566 dy_InvestmentInWhollyOwnedSubsidiaries / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 1,621 dy_InvestmentInWhollyOwnedSubsidiaries / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |  |
Intercompany receivables | 708,222 dy_IntercompanyReceivablesAggregate / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 628,443 dy_IntercompanyReceivablesAggregate / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |  |
Other | 2,315 us-gaap_OtherAssetsNoncurrent / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 2,466 us-gaap_OtherAssetsNoncurrent / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |  |
Total non-current assets | 1,268,932 us-gaap_AssetsNoncurrent / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 1,192,143 us-gaap_AssetsNoncurrent / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |  |
Total assets | 1,827,729 us-gaap_Assets / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 1,782,708 us-gaap_Assets / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |  |
Current liabilities: |  |  |  |
Accounts payable | 49,926 us-gaap_AccountsPayableCurrent / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 58,970 us-gaap_AccountsPayableCurrent / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |  |
Current portion of debt | 0 us-gaap_DebtCurrent / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 0 us-gaap_DebtCurrent / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |  |
Billings in excess of costs and estimated earnings | 16,422 dy_BillingsInExcessOfCostsAndEstimatedEarnings / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 13,882 dy_BillingsInExcessOfCostsAndEstimatedEarnings / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |  |
Accrued insurance claims | 33,973 dy_AccruedInsuranceClaimsCurrent / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 31,599 dy_AccruedInsuranceClaimsCurrent / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |  |
Accrued insurance claims | 36 us-gaap_DeferredTaxLiabilitiesCurrent / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 66 us-gaap_DeferredTaxLiabilitiesCurrent / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |  |
Other accrued liabilities | 52,752 us-gaap_OtherAccruedLiabilitiesCurrent / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 61,284 us-gaap_OtherAccruedLiabilitiesCurrent / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |  |
Total current liabilities | 153,109 us-gaap_LiabilitiesCurrent / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 165,801 us-gaap_LiabilitiesCurrent / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |  |
Long-term debt | 0 us-gaap_LongTermDebtAndCapitalLeaseObligations / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 0 us-gaap_LongTermDebtAndCapitalLeaseObligations / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |  |
Accrued insurance claims | 38,215 dy_AccruedInsuranceClaimsNoncurrent / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 32,959 dy_AccruedInsuranceClaimsNoncurrent / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |  |
Deferred tax liabilities, net non-current | 48,312 us-gaap_DeferredTaxLiabilitiesNoncurrent / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 48,593 us-gaap_DeferredTaxLiabilitiesNoncurrent / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |  |
Intercompany payables | 0 dy_IntercompanyPayablesAggregate / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 0 dy_IntercompanyPayablesAggregate / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |  |
Other liabilities | 1,887 us-gaap_OtherLiabilitiesNoncurrent / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 1,711 us-gaap_OtherLiabilitiesNoncurrent / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |  |
Total liabilities | 241,523 us-gaap_Liabilities / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 249,064 us-gaap_Liabilities / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |  |
Total stockholders' equity | 1,586,206 us-gaap_StockholdersEquity / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 1,533,644 us-gaap_StockholdersEquity / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |  |
Total liabilities and stockholders' equity | 1,827,729 us-gaap_LiabilitiesAndStockholdersEquity / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember | 1,782,708 us-gaap_LiabilitiesAndStockholdersEquity / dei_LegalEntityAxis = us-gaap_GuarantorSubsidiariesMember |  |
Non- Guarantor Subsidiaries |  |  |  |
Current assets: |  |  |  |
Cash and equivalents | 1,348 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 933 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 1,132 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 441 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember
Accounts receivable, net | 1,989 us-gaap_AccountsReceivableNetCurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 2,981 us-gaap_AccountsReceivableNetCurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |  |
Costs and estimated earnings in excess of billings | 1,393 dy_CostsAndEstimatedEarningsInExcessOfBillings / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 2,028 dy_CostsAndEstimatedEarningsInExcessOfBillings / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |  |
Inventories | 0 us-gaap_InventoryNet / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 0 us-gaap_InventoryNet / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |  |
Deferred tax assets, net | 71 us-gaap_DeferredTaxAssetsNetCurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 87 us-gaap_DeferredTaxAssetsNetCurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |  |
Other current assets | 280 us-gaap_OtherAssetsCurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 518 us-gaap_OtherAssetsCurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |  |
Total current assets | 5,081 us-gaap_AssetsCurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 6,547 us-gaap_AssetsCurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |  |
Property and equipment, net | 18,320 us-gaap_PropertyPlantAndEquipmentNet / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 16,147 us-gaap_PropertyPlantAndEquipmentNet / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |  |
Goodwill | 0 us-gaap_Goodwill / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 0 us-gaap_Goodwill / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |  |
Intangible assets, net | 577 us-gaap_IntangibleAssetsNetExcludingGoodwill / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 633 us-gaap_IntangibleAssetsNetExcludingGoodwill / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |  |
Deferred tax assets, net non-current | 0 us-gaap_DeferredTaxAssetsNetNoncurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 15 us-gaap_DeferredTaxAssetsNetNoncurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |  |
Investment in subsidiaries | 0 dy_InvestmentInWhollyOwnedSubsidiaries / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 0 dy_InvestmentInWhollyOwnedSubsidiaries / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |  |
Intercompany receivables | 0 dy_IntercompanyReceivablesAggregate / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 0 dy_IntercompanyReceivablesAggregate / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |  |
Other | 147 us-gaap_OtherAssetsNoncurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 151 us-gaap_OtherAssetsNoncurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |  |
Total non-current assets | 19,044 us-gaap_AssetsNoncurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 16,946 us-gaap_AssetsNoncurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |  |
Total assets | 24,125 us-gaap_Assets / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 23,493 us-gaap_Assets / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |  |
Current liabilities: |  |  |  |
Accounts payable | 1,211 us-gaap_AccountsPayableCurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 1,265 us-gaap_AccountsPayableCurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |  |
Current portion of debt | 0 us-gaap_DebtCurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 0 us-gaap_DebtCurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |  |
Billings in excess of costs and estimated earnings | 0 dy_BillingsInExcessOfCostsAndEstimatedEarnings / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 0 dy_BillingsInExcessOfCostsAndEstimatedEarnings / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |  |
Accrued insurance claims | 50 dy_AccruedInsuranceClaimsCurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 49 dy_AccruedInsuranceClaimsCurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |  |
Accrued insurance claims | 53 us-gaap_DeferredTaxLiabilitiesCurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 24 us-gaap_DeferredTaxLiabilitiesCurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |  |
Other accrued liabilities | 1,504 us-gaap_OtherAccruedLiabilitiesCurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 1,616 us-gaap_OtherAccruedLiabilitiesCurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |  |
Total current liabilities | 2,818 us-gaap_LiabilitiesCurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 2,954 us-gaap_LiabilitiesCurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |  |
Long-term debt | 0 us-gaap_LongTermDebtAndCapitalLeaseObligations / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 0 us-gaap_LongTermDebtAndCapitalLeaseObligations / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |  |
Accrued insurance claims | 47 dy_AccruedInsuranceClaimsNoncurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 45 dy_AccruedInsuranceClaimsNoncurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |  |
Deferred tax liabilities, net non-current | 1,175 us-gaap_DeferredTaxLiabilitiesNoncurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 417 us-gaap_DeferredTaxLiabilitiesNoncurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |  |
Intercompany payables | 9,252 dy_IntercompanyPayablesAggregate / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 11,759 dy_IntercompanyPayablesAggregate / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |  |
Other liabilities | 4 us-gaap_OtherLiabilitiesNoncurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 3 us-gaap_OtherLiabilitiesNoncurrent / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |  |
Total liabilities | 13,296 us-gaap_Liabilities / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 15,178 us-gaap_Liabilities / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |  |
Total stockholders' equity | 10,829 us-gaap_StockholdersEquity / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 8,315 us-gaap_StockholdersEquity / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |  |
Total liabilities and stockholders' equity | 24,125 us-gaap_LiabilitiesAndStockholdersEquity / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember | 23,493 us-gaap_LiabilitiesAndStockholdersEquity / dei_LegalEntityAxis = us-gaap_NonGuarantorSubsidiariesMember |  |
Eliminations and Reclassifications |  |  |  |
Current assets: |  |  |  |
Cash and equivalents | 0 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember | 0 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember | 0 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember | 0 us-gaap_CashAndCashEquivalentsAtCarryingValue / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember
Accounts receivable, net | 0 us-gaap_AccountsReceivableNetCurrent / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember | 0 us-gaap_AccountsReceivableNetCurrent / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember |  |
Costs and estimated earnings in excess of billings | 0 dy_CostsAndEstimatedEarningsInExcessOfBillings / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember | 0 dy_CostsAndEstimatedEarningsInExcessOfBillings / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember |  |
Inventories | 0 us-gaap_InventoryNet / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember | 0 us-gaap_InventoryNet / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember |  |
Deferred tax assets, net | (169)us-gaap_DeferredTaxAssetsNetCurrent / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember | (170)us-gaap_DeferredTaxAssetsNetCurrent / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember |  |
Other current assets | 0 us-gaap_OtherAssetsCurrent / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember | 0 us-gaap_OtherAssetsCurrent / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember |  |
Total current assets | (169)us-gaap_AssetsCurrent / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember | (170)us-gaap_AssetsCurrent / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember |  |
Property and equipment, net | 0 us-gaap_PropertyPlantAndEquipmentNet / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember | 0 us-gaap_PropertyPlantAndEquipmentNet / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember |  |
Goodwill | 0 us-gaap_Goodwill / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember | 0 us-gaap_Goodwill / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember |  |
Intangible assets, net | 0 us-gaap_IntangibleAssetsNetExcludingGoodwill / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember | 0 us-gaap_IntangibleAssetsNetExcludingGoodwill / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember |  |
Deferred tax assets, net non-current | (4,323)us-gaap_DeferredTaxAssetsNetNoncurrent / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember | (4,081)us-gaap_DeferredTaxAssetsNetNoncurrent / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember |  |
Investment in subsidiaries | (2,436,891)dy_InvestmentInWhollyOwnedSubsidiaries / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember | (2,351,576)dy_InvestmentInWhollyOwnedSubsidiaries / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember |  |
Intercompany receivables | (708,222)dy_IntercompanyReceivablesAggregate / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember | (628,443)dy_IntercompanyReceivablesAggregate / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember |  |
Other | 0 us-gaap_OtherAssetsNoncurrent / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember | 0 us-gaap_OtherAssetsNoncurrent / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember |  |
Total non-current assets | (3,149,436)us-gaap_AssetsNoncurrent / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember | (2,984,100)us-gaap_AssetsNoncurrent / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember |  |
Total assets | (3,149,605)us-gaap_Assets / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember | (2,984,270)us-gaap_Assets / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember |  |
Current liabilities: |  |  |  |
Accounts payable | 0 us-gaap_AccountsPayableCurrent / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember | 0 us-gaap_AccountsPayableCurrent / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember |  |
Current portion of debt | 0 us-gaap_DebtCurrent / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember | 0 us-gaap_DebtCurrent / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember |  |
Billings in excess of costs and estimated earnings | 0 dy_BillingsInExcessOfCostsAndEstimatedEarnings / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember | 0 dy_BillingsInExcessOfCostsAndEstimatedEarnings / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember |  |
Accrued insurance claims | 0 dy_AccruedInsuranceClaimsCurrent / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember | 0 dy_AccruedInsuranceClaimsCurrent / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember |  |
Accrued insurance claims | (169)us-gaap_DeferredTaxLiabilitiesCurrent / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember | (170)us-gaap_DeferredTaxLiabilitiesCurrent / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember |  |
Other accrued liabilities | 0 us-gaap_OtherAccruedLiabilitiesCurrent / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember | 0 us-gaap_OtherAccruedLiabilitiesCurrent / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember |  |
Total current liabilities | (169)us-gaap_LiabilitiesCurrent / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember | (170)us-gaap_LiabilitiesCurrent / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember |  |
Long-term debt | 0 us-gaap_LongTermDebtAndCapitalLeaseObligations / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember | 0 us-gaap_LongTermDebtAndCapitalLeaseObligations / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember |  |
Accrued insurance claims | 0 dy_AccruedInsuranceClaimsNoncurrent / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember | 0 dy_AccruedInsuranceClaimsNoncurrent / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember |  |
Deferred tax liabilities, net non-current | (4,323)us-gaap_DeferredTaxLiabilitiesNoncurrent / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember | (4,081)us-gaap_DeferredTaxLiabilitiesNoncurrent / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember |  |
Intercompany payables | (708,222)dy_IntercompanyPayablesAggregate / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember | (628,443)dy_IntercompanyPayablesAggregate / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember |  |
Other liabilities | 0 us-gaap_OtherLiabilitiesNoncurrent / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember | 0 us-gaap_OtherLiabilitiesNoncurrent / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember |  |
Total liabilities | (712,714)us-gaap_Liabilities / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember | (632,694)us-gaap_Liabilities / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember |  |
Total stockholders' equity | (2,436,891)us-gaap_StockholdersEquity / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember | (2,351,576)us-gaap_StockholdersEquity / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember |  |
Total liabilities and stockholders' equity | $ (3,149,605)us-gaap_LiabilitiesAndStockholdersEquity / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember | $ (2,984,270)us-gaap_LiabilitiesAndStockholdersEquity / dei_LegalEntityAxis = us-gaap_ConsolidationEliminationsMember |  |

X
- Definition Carrying value as of the balance sheet date of obligations incurred through that date and payable to insurance entities and/or claimants to mitigate potential losses from auto liability, general liability, workers compensation, employee group health, and damage claims. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). + References No definition available. + Details
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