Investment in Other Affiliates Additional Information (Details) (USD $)	3 Months Ended		6 Months Ended		3 Months Ended	20 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014 Eicher -Polaris Private Limited	Jun. 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						13,591,000
Income (Loss) from Equity Method Investments	$ (967,000)	$ (586,000)	$ (1,863,000)	$ (998,000)