Leases - Cash Flow by Lease Type (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Leases
Operating cash outflows from operating leases	$ 6,009	$ 5,159	$ 4,794
Operating cash outflows from finance leases	5,086	5,321	5,594
Financing cash outflows from finance leases	763	399
Operating lease assets obtained in exchange for operating lease liabilities	$ 8,670	$ 2,369	$ 5,849

Amount of interest paid on finance lease liability.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 842
-SubTopic 20
-Section 50
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Amount of cash outflow for principal payment on finance lease.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 20
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- Definition

Amount of cash outflow from operating lease, excluding payments to bring another asset to condition and location necessary for its intended use.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 20
-Section 45
-Paragraph 5
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=123391704&loc=SL77918643-209977

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-Publisher FASB
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Amount of increase in right-of-use asset obtained in exchange for operating lease liability.

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