Investment in Other Affiliates Additional Information (Details) (USD $)	3 Months Ended		9 Months Ended		3 Months Ended	23 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014 Eicher -Polaris Private Limited	Sep. 30, 2014 Eicher -Polaris Private Limited
Investments in and Advances to Affiliates [Line Items]
Equity method investment ownership percentage					50.00%	50.00%
Period for proportionate share of income (loss) to be reflected in consolidated financials					1 month
Joint venture investment					$ 50,000,000
Investment maturity period					3 years
Payments to Acquire Businesses and Interest in Affiliates						17,749,000
Income (Loss) from Equity Method Investments	$ (1,036,000)	$ (631,000)	$ (2,899,000)	$ (1,629,000)