Revenue Recognition (Details 1)	3 Months Ended
	Mar. 31, 2023 USD ($)
Revenue Recognition
Deferred Revenue, Beginning	$ 2,427,000
Reclassification Of Beginning Deferred Revenue To Revenue, As A Result Of Performance Obligations Satisfied	(2,062,000)
Cash Received In Advance And Not Recognized As Revenue	1,936,000
Deferred Revenue, ending	$ 2,301,000