Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2014

Significant Accounting Policies

Schedule of changes in allowance for doubtful accounts

	Year Ended December 31,
In thousands	2014			2013			2012
Balance at beginning of year	$	1,729		$	2,574		$	2,445
Net charges to expense	(68		)	47			722
Amounts recovered against the allowance, net of charges	(437		)	(892		)	(593		)
Balance at end of year	$	1,224		$	1,729		$	2,574

Schedule of estimated useful lives of property, plant and equipment

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

Schedule of capital lease assets

	December 31,
In thousands	2014			2013
Equipment and furniture	$	1,351		$	2,323
Less accumulated amortization	(980		)	(1,535		)
Net book value	$	371		$	788

Schedule of information about the operations in different geographical areas

	Year Ended December 31,
In thousands	2014		2013		2012
Revenue (1)
United States	$	463,752	$	469,596	$	492,118
Other countries	89,924		90,013		88,973
Total revenue	$	553,676	$	559,609	$	581,091

	December 31,
In thousands	2014		2013
Property, plant and equipment (2)
United States	$	33,134	$	34,556
Other countries	3,779		6,155
Total property, plant and equipment	$	36,913	$	40,711

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

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