Revenue Recognition (Tables)

6 Months Ended

Jun. 30, 2018

Revenue from Contract with Customer [Abstract]

Disaggregation of Revenue [Table Text Block]

	Three months ended				Six months ended
In thousands	June 30, 2018		June 30, 2017		June 30, 2018		June 30, 2017
Digital product sales:
Catalog and small customized products	$	2,353	$	3,360	$	5,301	$	5,940
Large customized products		-		-		1,000		-
Subtotal		2,353		3,360		6,301		5,940
Digital product lease and maintenance		709		618		1,296		1,115
Total	$	3,062	$	3,978	$	7,597	$	7,055

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

	June 30, 2018		December 31, 2017
In thousands
Receivables	$	3,095	$	3,522
Contract liabilities		1,008		1,209

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

	Three months ended June 30, 2018		Six months ended June 30, 2018
In thousands
Revenue recognized in the period from:
Amounts included in the contract liability at the     beginning of the period	$	205	$	753
Performance obligations satisfied in previous periods     (for example, due to changes in transaction price)		-		-