Segment Reporting and Concentrations (Details)	3 Months Ended
Mar. 31, 2022 customer Integer	Mar. 31, 2021 customer	Dec. 31, 2021 Integer
Segment Reporting [Abstract]
Number of Customers Accounting for More than 10 Percent of Revenue \| customer	2	2
Number Of Customers With Significant Accounts Receivable Balance \| Integer	3		2

Number of Customers Accounting for More than 10 Percent of Revenue

No definition available.

Name:	falc_NumberofCustomersAccountingforMorethan10PercentofRevenue
Namespace Prefix:	falc_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration