Business Segment Information - Additional Information (Details)	9 Months Ended		3 Months Ended		9 Months Ended			12 Months Ended
	Sep. 30, 2014 Location	Sep. 30, 2014 Customer Concentration Risk Americas Customer	Sep. 30, 2014 Revenues Customer Concentration Risk Americas	Sep. 30, 2013 Revenues Customer Concentration Risk Americas	Sep. 30, 2014 Revenues Customer Concentration Risk Americas	Sep. 30, 2013 Revenues Customer Concentration Risk Americas	Sep. 30, 2014 Accounts Receivable Customer Concentration Risk Americas	Dec. 31, 2013 Accounts Receivable Customer Concentration Risk Americas
Segment Reporting Information [Line Items]
Business organized number of geographical theatres (area)	3
Concentration percentage from customer			26.00%	17.00%	17.00%	17.00%	19.00%	11.00%
Number of customers accounted for more than 10% of gross accounts receivable and revenues		2