Short-Term Debt and Long-term Debt (Short-term Borrowings) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020
Debt [Abstract]
Average balance outstanding during the year	$ 48	$ 160
Highest month-end balance during the year		$ 25,000
Average interest rate during the year	0.50%	0.36%

For the form of debt having an initial term of less than one year or less than the normal operating cycle, if longer, average borrowings during the period.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher SEC
-Name Regulation S-K (SK)
-Number 229
-Section 1402
-Paragraph (a)

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher SEC
-Name Regulation S-K (SK)
-Number 229
-Section 1402
-Paragraph (b)
-Subparagraph (1)

Name:	us-gaap_ShorttermDebtAverageOutstandingAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration