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Fair Value Measurements (Tables) | 6 Months Ended
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Jun. 30, 2020
Fair Value Measurements |
Schedule of assets that are measured at fair value on a recurring basis | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | Fair Value Measurement at Reporting Date Using
in thousands | ​ | ​ | June 30, 2020 | ​ | Quoted Prices in Active Markets for Identical Assets (Level 1) | ​ | Significant Other Observable Inputs (Level 2) | ​ | Significant Unobservable Inputs (Level 3)
Assets: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
U.S. Treasury Notes | ​ | $ | 6,994 | ​ | - | $ | 6,994 | ​ | -
Corporate Notes / Bonds | ​ | $ | 10,689 | ​ | - | $ | 10,689 | ​ | -
Commercial Paper | ​ | $ | 1,499 | ​ | - | $ | 1,499 | ​ | -
U.S. Treasury Bills | ​ | $ | 5,365 | ​ | - | $ | 5,365 | ​ | -
U.S. Government Agencies | ​ | $ | 2,249 | ​ | - | $ | 2,249 | ​ | -
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​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | Fair Value Measurement at Reporting Date Using
in thousands | ​ | ​ | December 31, 2019 | ​ | Quoted Prices in Active Markets for Identical Assets (Level 1) | ​ | Significant Other Observable Inputs (Level 2) | ​ | Significant Unobservable Inputs (Level 3)
Assets: | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
U.S. Treasury Notes | ​ | $ | 9,225 | ​ | - | $ | 9,225 | ​ | -
Corporate Notes / Bonds | ​ | $ | 8,169 | ​ | - | $ | 8,169 | ​ | -
Commercial Paper | ​ | $ | 3,482 | ​ | - | $ | 3,482 | ​ | -
U.S. Treasury Bills | ​ | $ | 2,385 | ​ | - | $ | 2,385 | ​ | -
U.S. Government Agencies | ​ | $ | 2,249 | ​ | - | $ | 2,249 | ​ | -

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- Definition Tabular disclosure of assets, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, by class that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + 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 (b) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 Reference 2: 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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