Summary of Significant Accounting Policies - Long Lived Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Segment information
Gain (loss) on disposal/write-down of property, plant and equipment (excluding real estate)	$ (3,000)	$ (1,065)	$ (430)
Gain on sale of real estate	1,059	10,512	1,847
Tax effect on gain on sale of real estate	(209)	(2,205)	(430)
Gain on sale of real estate, net of tax	850	$ 8,307	1,417
North American Records and Information Management Business
Segment information
Gain (loss) on disposal/write-down of property, plant and equipment (excluding real estate)	1,500
Write-down of certain facilities			1,700
Gains (loss) on the retirement of leased vehicles accounted for as a capital lease			2,500
Corporate and Other
Segment information
Write-down of certain facilities			300
Western European Business
Segment information
Gain (loss) on disposal/write-down of property, plant and equipment (excluding real estate)	$ 1,800
Write-down of certain facilities			600
Other International Business
Segment information
Write-down of certain facilities			$ 300