Discontinued Operations (Financial Information) (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Income (loss) from discontinued operations, net of tax	$ 10,064	$ (116)
Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenue	0	74,068
Earnings (loss) from discontinued operations	0	931
Gain (loss) on sale (including transaction costs)	9,873	(667)
Income (loss) from discontinued operations before taxes	9,873	264
Tax (benefit) provision	(191)	380
Income (loss) from discontinued operations, net of tax	10,064	(116)
Software Solutions \| Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenue	0	73,318
Earnings (loss) from discontinued operations	0	1,594
Gain (loss) on sale (including transaction costs)	10,285	0
Income (loss) from discontinued operations before taxes	10,285	1,594
Production Mail \| Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Revenue	0	750
Earnings (loss) from discontinued operations	0	(663)
Gain (loss) on sale (including transaction costs)	(412)	(667)
Income (loss) from discontinued operations before taxes	$ (412)	$ (1,330)

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