Revenue Recognition (Tables)

6 Months Ended

Jun. 30, 2019

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue [Table Text Block]

	Three months ended				Six months ended
In thousands	June 30, 2019		June 30, 2018		June 30, 2019		June 30, 2018
Digital product sales:
Catalog and small customized products	$	3,113	$	2,353	$	6,204	$	5,301
Large customized products		-		-		-		1,000
Subtotal		3,113		2,353		6,204		6,301
Digital product lease and maintenance:
Operating leases		338		439		630		766
Maintenance agreements		296		270		512		530
Subtotal		634		709		1,142		1,296
Total	$	3,747	$	3,062	$	7,346	$	7,597

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

In thousands	June 30, 2019		December 31, 2018
Gross receivables	$	3,196	$	4,067
Allowance for bad debts		644		1,796
Net receivables		2,552		2,271
Contract liabilities		1,325		465

Schedule of Changes In Contract Asset and Contract Liability [Table Text Block]

	Three months ended				Six months ended
In thousands	June 30, 2019		June 30, 2018		June 30, 2019		June 30, 2018
Revenue recognized in the period from:
Amounts included in the contract liability at the      beginning of the period	$	149	$	205	$	350	$	753