Overview and significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2018

Accounting Policies [Abstract]

Schedule of information about the operations in different geographical areas

Information about the operations in different geographic areas:

	Year Ended December 31,
In thousands	2018		2017
Revenue (1)
United States	$	243,298	$	330,944
Other countries	41,330		52,962
Total revenue	$	284,628	$	383,906

	December 31,
In thousands	2018		2017
Property, plant and equipment (2)
United States	$	11,647	$	18,789
Other countries	1,945		2,998
Total property, plant and equipment	$	13,592	$	21,787

(1) Geographic revenues are based on the location of the service being performed.

(2) Property, plant and equipment are based on physical location.

Schedule of changes in allowance for doubtful accounts

The changes in the allowance for doubtful accounts consisted of the following:

	Year Ended December 31,
In thousands	2018			2017
Balance at beginning of year	$	697		$	1,028
Net charges to expense	131			192
Amounts recovered against the allowance	(398		)	(523		)
Balance at end of year	$	430		$	697

Schedule of estimated useful lives of property, plant and equipment

The general ranges of estimated useful lives are:

Buildings and improvements	3	to	40 years
Software	2	to	10 years
Equipment and furniture	3	to	20 years

Schedule of capital lease assets

Capital lease assets are included in property, plant and equipment. Capital lease assets consisted of:

	December 31,
In thousands	2018			2017
Equipment and furniture	$	2,658		$	1,774
Less accumulated depreciation	(920		)	(687		)
Net book value	$	1,738		$	1,087