Discontinued Operations (Financial Information) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss from discontinued operations, net of tax	$ (524)	$ 572	$ (1,020)	$ (3,886)	$ 2,467	$ 616	$ (3,032)	$ 10,064	$ (4,858)	$ 10,115	$ 154,460
Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss on sale									(1,827)	7,805	181,313
Tax provision									3,031	(2,310)	48,350
Loss from discontinued operations, net of tax									(4,858)	10,115	154,460
Revenue											272,565
Earnings (loss) from discontinued operations											21,497
Income (loss) from discontinued operations before taxes											202,810
Software Solutions | Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss on sale									(1,827)	7,972	195,957
Revenue											272,565
Earnings (loss) from discontinued operations											22,160
Income (loss) from discontinued operations before taxes											218,117
Production Mail | Disposed of by Sale
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Loss on sale									$ 0	$ (167)	(14,644)
Revenue											0
Earnings (loss) from discontinued operations											(663)
Income (loss) from discontinued operations before taxes											$ (15,307)