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v3.20.1

Fair Value Measurements (Assets and Liabilities Measured at Fair Value on Recurring Basis) (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2020 | Dec. 31, 2019
Assets: |  |
Restricted Investments | $ 75,409 | $ 70,974
Municipal Bonds [Member] |  |
Assets: |  |
Investments in lieu of retainage | 1,100 | 1,200
US Government Agencies Securities [Member] |  |
Assets: |  |
Restricted and other investments | 38,300 | 33,800
Corporate Debt Securities [Member] |  |
Assets: |  |
Restricted and other investments | 35,600 | 35,800
Fair value measured on a recurring basis |  |
Assets: |  |
Cash and cash equivalents | 198,122 | 193,685
Restricted cash | 5,956 | 8,416
Restricted investments | 75,409 | 70,974
Investments in lieu of retainage | 95,622 | 90,791
Total | 375,109 | 363,866
Fair value measured on a recurring basis | Quoted prices in active markets (Level 1) [Member] |  |
Assets: |  |
Cash and cash equivalents | 198,122 | 193,685
Restricted cash | 5,956 | 8,416
Investments in lieu of retainage | 94,519 | 89,572
Total | 298,597 | 291,673
Fair value measured on a recurring basis | Significant other observable inputs (Level 2) [Member] |  |
Assets: |  |
Restricted investments | 75,409 | 70,974
Investments in lieu of retainage | 1,103 | 1,219
Total | $ 76,512 | $ 72,193
Maximum [Member] |  |
Assets: |  |
Restricted And other investments, term | 5 years | 5 years
Certificates of Deposit [Member] |  |
Assets: |  |
Restricted and other investments | $ 1,500 | $ 1,400
Money Market Funds [Member] |  |
Assets: |  |
Investments in lieu of retainage | $ 94,500 | $ 89,600

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- Definition This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item includes investments in lieu of retainage which are classified as Account Receivables and are comprised of U.S. Treasury Notes and other municipal bonds. + References No definition available. + Details
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- Definition Restricted And Other Investments + References No definition available. + Details
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- Definition Restricted Cash Fair Value Disclosure + References No definition available. + Details
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- Definition Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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- Definition Fair value portion of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. + References No definition available. + Details
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- Definition The aggregate value of all restricted investments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -Section S99 -Paragraph 4 -Subparagraph (SX 210.12-12C.9(c)) -URI http://asc.fasb.org/extlink&oid=50485924&loc=d3e611225-123010 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 946 -SubTopic 320 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-12.6(c)) -URI http://asc.fasb.org/extlink&oid=50485924&loc=d3e611133-123010 + Details
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