Stockholders' Equity - Rollforward of Common Stock (Details) - shares	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020
Increase (Decrease) in Stockholders' Equity
Beginning (shares)	10,563,290
Ending (shares)	10,670,343	10,563,290
Treasury
Increase (Decrease) in Stockholders' Equity
Beginning (shares)	552,489	693,688
Issued for stock-based compensation plans (shares)	(107,053)	(141,199)
Ending (shares)	445,436	552,489
Common Stock
Increase (Decrease) in Stockholders' Equity
Beginning (shares)	10,563,290	10,422,091
Issued for stock-based compensation plans (shares)	107,053	141,199
Ending (shares)	10,670,343	10,563,290

Number, after forfeiture, of shares or units issued under share-based payment arrangement. Excludes shares or units issued under employee stock ownership plan (ESOP).

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section 50
-Paragraph 2
-URI http://asc.fasb.org/extlink&oid=123467817&loc=d3e21463-112644

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 505
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.3-04)
-URI http://asc.fasb.org/extlink&oid=120397183&loc=d3e187085-122770

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(28))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 210
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SX 210.5-02(29))
-URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682

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Balance Type:	na
Period Type:	duration