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Debt (Purchase Money Promissory Note) (Narrative) (Details) - USD ($) $ in Thousands |  | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
Sep. 18, 2019 | Jun. 30, 2020 | Jun. 30, 2019 | Dec. 31, 2019
Debt Instrument [Line Items] |  |  |  |
Payment to repurchase common stocks |  | $ 989 | $ 2,631 |
Purchase Money Promissory Note [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Maturity date | Sep. 18, 2024 | Sep. 18, 2024 |  | Sep. 18, 2024
Interest rate | 5.00% |  |  |
Payment to repurchase shares | $ 3,500 |  |  |
Class A [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Shares repurchased plan, shares |  | 75,157 |  |
Class A [Member] | Purchase Money Promissory Note [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Shares repurchased plan, shares | 407,000 |  |  |
Payment to repurchase common stocks | $ 5,500 |  |  |

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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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- Definition Date when the debt instrument is scheduled to be fully repaid, in CCYY-MM-DD format. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(2)) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb)(2) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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