Intangible Assets, Goodwill and Other Assets (Details) - USD ($)	3 Months Ended	6 Months Ended	12 Months Ended
Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019	Dec. 31, 2019
Business Acquisition [Line Items]
Amortization of intangible assets	$ 3,700,000	$ 2,300,000	$ 7,416,000	$ 4,677,000
Sales related to financial instrument			0		$ 0
Settlements related to financial instrument			0		0
Issuances related to financial instrument			0		0
Net unrealized gains	2,200,000	0	2,900,000	0
Realized gains		$ 0		$ 0
Fair Value, Inputs, Level 1
Business Acquisition [Line Items]
Cost basis of investment	7,400,000		7,400,000
Fair value measurement in relation to equity instrument	$ 10,800,000		$ 10,800,000		$ 7,900,000

The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI).

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