Investment in Other Affiliates Additional Information (Details) (USD $)	3 Months Ended		17 Months Ended
	Mar. 31, 2014	Mar. 31, 2013	Mar. 31, 2014 Eicher -Polaris Private Limited
Investments in and Advances to Affiliates [Line Items]
Payments to Acquire Businesses and Interest in Affiliates			$ 9,433,000
Income (Loss) from Equity Method Investments	$ (896,000)	$ (412,000)