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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Summary of Significant Accounting Policies Inventory (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Inventory [Line Items]
Inventory, Raw Materials, Gross					$ 3,200,000
Inventory, Finished Goods, Gross					900,000
Inventory, Work in Process, Gross					$ 200,000
Amortization of Intangible Assets	$ 300,000	$ 400,000	$ 1,200,000	$ 1,300,000