Revenue Recognition (Details) - Contract Balances with Customers - USD ($)	12 Months Ended
Dec. 31, 2020	Dec. 31, 2019
Revenue Recognition (Details) - Contract Balances with Customers [Line Items]
Allowance for Loan and Lease Loss, Recovery of Bad Debts (in Dollars)	$ 123,000	$ 97,000

Amount of recovery of loans and lease receivables which had previously been fully or partially written-off as bad debts.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (c)(4)
-URI http://asc.fasb.org/extlink&oid=123577603&loc=SL6953423-111524

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