Goodwill and Other Assets (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended			3 Months Ended
	Sep. 30, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Jun. 30, 2013
Goodwill and Other Assets [Line Items]
Goodwill		$ 462,718	$ 470,572	$ 493,695
Accumulated impairment losses		(290,744)	(290,744)	(220,744)
Beginning balance		179,828	272,951
Impairment loss	70,000	0	70,000
Currency translation adjustment		(6,254)	(23,123)
Ending balance		171,974	179,828	272,951
Capitalized software development costs		36,260	40,235
Amortization expense on capitalized software		18,326	20,889	18,833
Goodwill, Impaired, Facts and Circumstances Leading to Impairment		(1,600)
Impairment of assets		2,123	72,017	15,783
North America
Goodwill and Other Assets [Line Items]
Goodwill		110,250	112,029	112,176
Accumulated impairment losses		(13,171)	(13,171)	(13,171)
Beginning balance		98,858	99,005
Impairment loss			0
Currency translation adjustment		(179)	(147)
Ending balance		97,079	98,858
Percentage of fair value in excess of carrying amount		100.00%
Goodwill, Impaired, Facts and Circumstances Leading to Impairment		1,600
Asia Pacific
Goodwill and Other Assets [Line Items]
Goodwill		40,036	41,307	45,987
Accumulated impairment losses		0	0	0
Beginning balance		41,307	45,987
Impairment loss			0
Currency translation adjustment		(1,271)	(4,680)
Ending balance		40,036	41,307
Amount of fair value in excess of carrying amount		114,200
Percentage of fair value in excess of carrying amount		39.00%
Goodwill, Impaired, Facts and Circumstances Leading to Impairment		0
EMEA
Goodwill and Other Assets [Line Items]
Goodwill		168,714	168,714	168,714
Accumulated impairment losses		(168,714)	(168,714)	(168,714)
Beginning balance		0	0
Impairment loss			0
Currency translation adjustment		0	0
Ending balance		0	0
Goodwill, Impaired, Facts and Circumstances Leading to Impairment		0
Latin America
Goodwill and Other Assets [Line Items]
Goodwill		4,324	4,824	5,022
Accumulated impairment losses		0	0	0
Beginning balance		4,824	5,022
Impairment loss			0
Currency translation adjustment		(500)	(198)
Ending balance		4,324	4,824
Percentage of fair value in excess of carrying amount		100.00%
Goodwill, Impaired, Facts and Circumstances Leading to Impairment		0
Brazil
Goodwill and Other Assets [Line Items]
Goodwill		139,394	143,698	161,796
Accumulated impairment losses		(108,859)	(108,859)	(38,859)
Beginning balance		34,839	122,937
Impairment loss			70,000
Currency translation adjustment		(4,304)	(18,098)
Ending balance		30,535	34,839
Amount of fair value in excess of carrying amount		61,000
Percentage of fair value in excess of carrying amount		17.00%
Goodwill acquired					26,003
Goodwill, Impaired, Facts and Circumstances Leading to Impairment		0
Amortizable intangible assets resulting from acquisition					$ 16,000