Basis of Presentation and General Information (Narrative) (Details) $ / shares in Units, shares in Thousands, $ in Thousands	1 Months Ended	3 Months Ended	12 Months Ended
	Dec. 31, 2012 $ / shares	Sep. 30, 2022 Segment	Dec. 30, 2022 USD ($) Segment Customer $ / shares shares	Dec. 31, 2021 USD ($) Customer $ / shares shares	Jan. 01, 2021 USD ($) Customer $ / shares
Basis Of Presentation And General Information [Line Items]
Dividend declared | $ / shares	$ 0.10		$ 0.44	$ 0.40	$ 0.38
Dividends payable nature			During 2022, the Company declared four quarterly dividend payments, the fourth of which was paid in January 2023.
Period of intangible assets amortized			5 years
Amortization of finite-lived intangible assets			$ 154	$ 1,016	$ 977
Revenue recognized as a result of change in contract liability			13,100	8,300
Deferred commissions			1,500	1,600
Commissions expense			$ 1,100	$ 1,000
Antidilutive common share equivalents | shares			2	2
Number of customers accounted for more than five percent of revenue | Customer				0	0
Number of operating segments | Segment		3	3
Number of reportable segments | Segment			3
Number of reporting units | Segment			3
Global S&BT [Member]
Basis Of Presentation And General Information [Line Items]
Number of customers accounted for seven percent of revenue | Customer			1
Minimum [Member]
Basis Of Presentation And General Information [Line Items]
Useful life of property and equipment			3 years
Maximum [Member]
Basis Of Presentation And General Information [Line Items]
Useful life of property and equipment			10 years
Customer contract period			12 months