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v3.20.1

Fair Value Measurements (Details) - USD ($) $ in Thousands | Dec. 31, 2019 | Dec. 31, 2018
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Fair Value, Inputs, Level 1 [Member] |  |
Cash and cash equivalents | $ 44,034 | $ 44,729
Fair Value, Inputs, Level 2 [Member] |  |
Revolving Credit Facility | $ 10,000 | $ 20,000

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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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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Fair value portion of contractual arrangement with a lender under which borrowings can be made up to a specific amount at any point in time. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- Details
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Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

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- Details
Name: | us-gaap_FairValueByFairValueHierarchyLevelAxis=us-gaap_FairValueInputsLevel2Member
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |