Acquisitions - Narrative (Details) $ in Thousands		3 Months Ended
	Aug. 11, 2015 USD ($)	Mar. 31, 2016 USD ($) Acquisition
Maxxton Holding B.V. (“MHB”)
Business Acquisition [Line Items]
Voting equity interest acquired (percent)	100.00%
Total consideration for acquisition	$ 23,600
Cash paid, net of cash acquired	13,269
Deferred purchase price payable	6,813
Liabilities assumed	$ 3,528
Deferred purchase price payment period	5 years
Variable compensation arrangement term	5 years
Series of Individually Immaterial Business Acquisitions
Business Acquisition [Line Items]
Total consideration for acquisition		$ 25,800
Deferred purchase price payable		$ 200
Number of acquisitions of real estate | Acquisition		3
Cash paid, net of cash acquired		$ 25,600
Acquisition related costs		$ 500