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.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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-SubTopic 30
-Section 45
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16225-109274

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Intangible Assets (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Finite-Lived Intangible Assets [Line Items]
Amortization of intangible assets	$ 214	$ 214	$ 429	$ 429
2021	859		859
2022	540		540
2023	540		540
2024	498		498
2025	$ 490		$ 490
Customer Lists [Member] \| Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets amortization period			7 years
Customer Lists [Member] \| Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets amortization period			10 years
Patents [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets amortization period			18 years
Software [Member] \| Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets amortization period			3 years
Software [Member] \| Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets amortization period			7 years
Trade Name [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets amortization period			20 years
Other [Member]
Finite-Lived Intangible Assets [Line Items]
Intangible assets amortization period			15 years