Segment and Related Information - Paragraphs (Details) $ in Thousands	12 Months Ended
Dec. 31, 2020 USD ($) segment customer	Dec. 31, 2019 USD ($) customer	Dec. 31, 2018 USD ($) customer
Segment and Related Information
Number of operating segments \| segment	2
Revenue from foreign exports	$ 0	$ 0	$ 0
Foreign Assets	$ 0	$ 0	$ 0
Patient Care \| Federal Government \| Net Revenues \| Customer Concentration
Segment and Related Information
Concentration risk (as a percent)	57.70%	57.50%	56.50%
Products & Services \| Customer Concentration
Segment and Related Information
Concentration risk (as a percent)	10.00%	10.00%	10.00%
Number of customers \| customer	0	0	0

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
-SubTopic 10
-Section 50
-Paragraph 42
-URI http://asc.fasb.org/extlink&oid=120311839&loc=d3e9054-108599

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6351-108592

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
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-URI http://asc.fasb.org/extlink&oid=121572278&loc=d3e13531-108611

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6404-108592

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