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Fair Value Measurements - Hierarchy (Details) - Fair Value, Measurements, Recurring - USD ($) $ in Thousands | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Assets, Fair Value Disclosure [Abstract] |  |
Total | $ 13,253 | $ 13,337
Level 1 |  |
Assets, Fair Value Disclosure [Abstract] |  |
Total | 0 | 150
Level 2 |  |
Assets, Fair Value Disclosure [Abstract] |  |
Total | 13,253 | 13,187
Level 3 |  |
Assets, Fair Value Disclosure [Abstract] |  |
Total | 0 | 0
Money market funds |  |
Assets, Fair Value Disclosure [Abstract] |  |
Money market funds |  | 150
Money market funds | Level 1 |  |
Assets, Fair Value Disclosure [Abstract] |  |
Money market funds |  | 150
Money market funds | Level 2 |  |
Assets, Fair Value Disclosure [Abstract] |  |
Money market funds |  | 0
Money market funds | Level 3 |  |
Assets, Fair Value Disclosure [Abstract] |  |
Money market funds |  | 0
Prepaid expenses and other | Interest rate swaps |  |
Assets, Fair Value Disclosure [Abstract] |  |
Interest rate swaps | 4,930 | 2,411
Prepaid expenses and other | Interest rate swaps | Level 1 |  |
Assets, Fair Value Disclosure [Abstract] |  |
Interest rate swaps | 0 | 0
Prepaid expenses and other | Interest rate swaps | Level 2 |  |
Assets, Fair Value Disclosure [Abstract] |  |
Interest rate swaps | 4,930 | 2,411
Prepaid expenses and other | Interest rate swaps | Level 3 |  |
Assets, Fair Value Disclosure [Abstract] |  |
Interest rate swaps | 0 | 0
Deferred charges and other assets, net: | Interest rate swaps |  |
Assets, Fair Value Disclosure [Abstract] |  |
Interest rate swaps | 8,323 | 10,776
Deferred charges and other assets, net: | Interest rate swaps | Level 1 |  |
Assets, Fair Value Disclosure [Abstract] |  |
Interest rate swaps | 0 | 0
Deferred charges and other assets, net: | Interest rate swaps | Level 2 |  |
Assets, Fair Value Disclosure [Abstract] |  |
Interest rate swaps | 8,323 | 10,776
Deferred charges and other assets, net: | Interest rate swaps | Level 3 |  |
Assets, Fair Value Disclosure [Abstract] |  |
Interest rate swaps | $ 0 | $ 0

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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=99377789&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 Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=99393222&loc=SL20226008-175313 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=109250915&loc=d3e13433-108611 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 + Details
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