Revenue Recognition (Details) - Disaggregation of revenue from contracts with customers - USD ($)	3 Months Ended
Mar. 31, 2024	Mar. 31, 2023
Digital product sales:
Revenue from contracts with customers	$ 2,624,000	$ 4,349,000
Digital Product Sales [Member]
Digital product sales:
Revenue from contracts with customers	2,429,000	4,121,000
Digital Product Sales [Member] \| Catalog and Small Customized Products [Member]
Digital product sales:
Revenue from contracts with customers	2,429,000	4,121,000
Digital Product Sales [Member] \| Large Customized Products [Member]
Digital product sales:
Revenue from contracts with customers
Digital Product Lease and Maintenance [Member]
Digital product sales:
Revenue from contracts with customers	195,000	228,000
Digital Product Lease and Maintenance [Member] \| Operating Leases [Member]
Digital product sales:
Revenue from contracts with customers	99,000	131,000
Digital Product Lease and Maintenance [Member] \| Maintenance Agreements [Member]
Digital product sales:
Revenue from contracts with customers	$ 96,000	$ 97,000

Amount, excluding tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value added and excise.

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+ Details