Description of Business and Summary of Significant Accounting Policies (Assets and Liabilities Measured at Fair Value on a Recurring Basis) (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Assets
Total assets measured at fair value	$ 25,467	$ 5,551
Liabilities
Total liabilities measured at fair value	3,352	10,095
Fair Value, Recurring \| Certificates of Deposit
Assets
Available-for-sale Securities	381	50
Quoted Prices in Active Markets for Identical Assets or Liabilitie (Level 1)
Assets
Total assets measured at fair value	25,467	5,551
Liabilities
Total liabilities measured at fair value	0	0
Significant Other Observable Inputs (Level 2)
Liabilities
Total liabilities measured at fair value	0	0
Significant Unobservable Inputs (Level 3)
Liabilities
Total liabilities measured at fair value	3,352	10,095
Contingent Accrued Earn-out Acquisition Consideration
Liabilities
Derivative liabilities	3,352	10,095
Contingent Accrued Earn-out Acquisition Consideration \| Significant Unobservable Inputs (Level 3)
Liabilities
Derivative liabilities	3,352	10,095
Certificates of Deposit
Assets
Available-for-sale Securities	24,903	4,493
Certificates of Deposit \| Quoted Prices in Active Markets for Identical Assets or Liabilitie (Level 1)
Assets
Available-for-sale Securities	24,903	4,493
Mutual Funds
Assets
Available-for-sale Securities	564	1,058
Mutual Funds \| Quoted Prices in Active Markets for Identical Assets or Liabilitie (Level 1)
Assets
Available-for-sale Securities	$ 564	$ 1,058

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Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Fair value, before effects of master netting arrangements, of a financial liability or 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 liabilities elected not to be offset. Excludes liabilities not subject to a master netting arrangement.

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