Revenue Recognition (Tables)

12 Months Ended

Dec. 31, 2020

Revenue Recognition (Tables) [Line Items]

Disaggregation of Revenue [Table Text Block]

In thousands	2020		2019
Digital product sales:
Catalog and small       customized products	$	6,823	$	13,322
Large customized       products		555		1,388
Subtotal		7,378		14,710
Digital product lease and maintenance:
Operating leases		936		1,215
Maintenance agreements		1,131		1,110
Subtotal		2,067		2,325
Total	$	9,445	$	17,035

Contract with Customer, Contract Asset, Contract Liability, and Receivable [Table Text Block]

In thousands		2020		2019
Gross receivables	$	2,042	$	3,124
Allowance for bad debts		660		743
Net receivables		1,382		2,381
Contract liabilities		618		230

Schedule Of Changes In Contract Asset And Contract Liability [Table Text Block]

In thousands		2020		2019
Revenue recognized in the period from:
Amounts included in the contract liability   at the beginning of the period	$	82	$	392
Performance obligations satisfied in    previous periods (for example, due to    changes in transaction price)		-		-