Acquisitions (Details) AUD / shares in Units, $ / shares in Units, $ in Thousands, AUD in Millions				1 Months Ended										3 Months Ended	12 Months Ended
	Feb. 19, 2016 USD ($) shares	Jun. 08, 2015 AUD AUD / shares shares	May. 31, 2013 USD ($)	Dec. 31, 2015 USD ($) acquisition	Dec. 31, 2014 USD ($)	Oct. 31, 2014 USD ($)	Sep. 30, 2014 USD ($)	Apr. 30, 2014 USD ($)	Feb. 28, 2014 USD ($)	Jan. 31, 2014 USD ($)	Oct. 31, 2013 USD ($)	Sep. 30, 2013 USD ($)	Jun. 30, 2013 USD ($)	Mar. 31, 2015 USD ($)	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)	Jun. 08, 2015 $ / shares
Business Acquisition
Consideration paid at closing															$ 22,500	$ 19,373	$ 19,148
International Business | Russia, Ukraine and Denmark
Business Acquisition
Purchase price							$ 24,500
Consideration paid at closing							17,900
Consideration payable at 2017							2,100
Consideration payable at 2020							4,500
Value of shares owned by joint venture partners							11,950
Payment of outstanding loan							$ 5,950
Storage rental and records management business in Texas
Business Acquisition
Purchase price			$ 25,000
Storage rental and records management and data protection business in Brazil
Business Acquisition
Purchase price													$ 29,000
Storage rental and records management and data protection business in Columbia
Business Acquisition
Purchase price												$ 54,000
Storage rental and records management and data protection business in Peru
Business Acquisition
Purchase price												$ 16,000
Cornerstone Records Management, LLC and its affiliates
Business Acquisition
Purchase price											$ 191,000
Tape Management Services Pty Ltd
Business Acquisition
Purchase price										$ 15,300
RM Arsiv Yonetim Hizmetleri Ticaret Anonim Sirketi
Business Acquisition
Purchase price									$ 21,200
Cash paid														$ 16,750
OSG Records Management (Europe) Limited
Business Acquisition
Purchase price								$ 13,700
Keepers
Business Acquisition
Purchase price						$ 46,200
Securit Records Management
Business Acquisition
Purchase price					$ 29,500
Crozier Fine Arts
Business Acquisition
Purchase price				$ 74,200
Navbharat Archive XPress Private Limited
Business Acquisition
Purchase price				16,100
Navbharat Archive XPress Private Limited | Parent
Business Acquisition
Purchase price				8,900
Navbharat Archive XPress Private Limited | Affiliated Entity
Business Acquisition
Purchase price				7,200
2015 Additional Acquisitions [Member]
Business Acquisition
Purchase price				$ 27,600
Number of businesses acquired | acquisition				12
2015 Additional Acquisitions [Member] | Minimum
Business Acquisition
Purchase price				$ 1,000
2015 Additional Acquisitions [Member] | Maximum
Business Acquisition
Purchase price				$ 5,400
Storage and Records Management Company
Business Acquisition
Number of businesses acquired | acquisition				9
Storage and Data Management Company
Business Acquisition
Number of businesses acquired | acquisition				2
Personal Storage Company
Business Acquisition
Number of businesses acquired | acquisition				1
Recall Holdings Limited
Business Acquisition
Price per outstanding share (in dollars per share) | $ / shares																		$ 0.50
Common stock issuable per Recall common share | shares		0.1722
Consideration transferable per Recall common share (per share) | AUD / shares		AUD 8.50
Consideration transferable cap (in Australian dollars per share) | AUD		AUD 225
Recall Holdings Limited | Subsequent Event
Business Acquisition
Purchase price	$ 1,791,000
Cash paid	$ 323,000
Recall Holdings Limited | Common Stock | Subsequent Event
Business Acquisition
Issuance of common stock (in shares) | shares	50,700,000