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Acquisitions (Details) (USD $) In Thousands, unless otherwise specified	9 Months Ended		3 Months Ended	12 Months Ended	9 Months Ended		3 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Jun. 30, 2013 Acquisition of Ottomotores [Member]	Dec. 31, 2012 Acquisition of Ottomotores [Member]	Sep. 30, 2013 Acquisition of Ottomotores [Member] Minimum [Member] kW	Sep. 30, 2013 Acquisition of Ottomotores [Member] Maximum [Member] kW	Sep. 30, 2013 Acquisition of Tower Light [Member] Country
Business Acquisition [Line Items]
Date of acquisition agreement				Dec. 08, 2012			Aug. 01, 2013
Industrial diesel gensets size					15	2,500
Total cash paid, net of cash acquired	$ 73,961	$ 2,275		$ 44,769			$ 80,239
Intangible assets				16,100			67,900
Goodwill				5,050			38,400
Decrease in goodwill			439
Additional intangible assets			2,590
Decrease in purchase price			6,278				300
Purchase price							76,484
Number of countries in which subsidiary of entity built leading market position in equipment rental markets							50
Cash deposit into escrow account to fund future earn-out payments							$ 6,645

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- Definition

The amount of acquisition cost of a business combination allocated to an identifiable intangible asset including goodwill.

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The increase (decrease) during the reporting period in intangible assets (for example patents and licenses).

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Refers to number of countries in which subsidiary of entity built leading market position in equipment rental markets.

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Amount of potential cash payments that could result from the contingent consideration arrangement.

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The total cost of the acquired entity including the cash paid to shareholders of acquired entities, fair value of debt and equity securities issued to shareholders of acquired entities, the fair value of the liabilities assumed, and direct costs of the acquisition.

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Date when the business acquisition agreement was executed, in CCYY-MM-DD format.

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Amount of goodwill arising from a business combination, which is the excess of the cost of the acquired entity over the amounts assigned to assets acquired and liabilities assumed.

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Change in the carrying value of goodwill. The change could be the result of new goodwill acquired, goodwill impairment, if any, goodwill written off related to the sale of a business or other adjustments to goodwill.

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The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase.

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