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v3.20.1

Investments and Fair Value Measurements (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2020 | Dec. 31, 2019
Cash, cash equivalents and investments [Abstract] |  |
Cash | $ 20,061 | $ 26,892
Cash equivalents [Abstract] |  |
Total cash and cash equivalents | 20,061 | 26,892
Amortized Cost | 8,699 | 9,430
Cash, cash equivalents and investments, amortized costs | 28,760 | 36,322
Gross Unrealized Gain | 4 | 6
Gross Unrealized (Loss) | (6) | (9)
Fair Value | 8,697 | 9,427
Cash, cash equivalents and investments, amortized costs | 28,758 | 36,319
Contractual maturities on investments, amortized cost basis [Abstract] |  |
Due within 1 year | 8,699 | 9,430
Investments, amortized cost | 8,699 | 9,430
Contractual maturities on investments, fair value basis [Abstract] |  |
Due within 1 year | 8,697 | 9,427
Investments, fair value | 8,697 | 9,427
Total Investments |  |
Cash equivalents [Abstract] |  |
Amortized Cost | 8,699 | 9,430
Gross Unrealized Gain | 4 | 6
Gross Unrealized (Loss) | (6) | (9)
Fair Value | 8,697 | 9,427
Contractual maturities on investments, amortized cost basis [Abstract] |  |
Investments, amortized cost | 8,699 | 9,430
Contractual maturities on investments, fair value basis [Abstract] |  |
Investments, fair value | 8,697 | 9,427
Certificates of Deposit [Member] |  |
Cash equivalents [Abstract] |  |
Amortized Cost | 1,680 | 2,400
Gross Unrealized Gain | 2 | 2
Fair Value | 1,682 | 2,402
Contractual maturities on investments, amortized cost basis [Abstract] |  |
Investments, amortized cost | 1,680 | 2,400
Contractual maturities on investments, fair value basis [Abstract] |  |
Investments, fair value | 1,682 | 2,402
Corporate Bonds [Member] |  |
Cash equivalents [Abstract] |  |
Amortized Cost | 7,019 | 7,030
Gross Unrealized Gain | 2 | 4
Gross Unrealized (Loss) | (6) | (9)
Fair Value | 7,015 | 7,025
Contractual maturities on investments, amortized cost basis [Abstract] |  |
Investments, amortized cost | 7,019 | 7,030
Contractual maturities on investments, fair value basis [Abstract] |  |
Investments, fair value | $ 7,015 | $ 7,025

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