Fair Value (Details Textual) (USD $) In Thousands, unless otherwise specified	3 Months Ended	12 Months Ended	3 Months Ended
Mar. 31, 2012	Mar. 31, 2011	Mar. 31, 2012 Third Quarter 2010 Exit Plan [Member] Center	Dec. 31, 2011 Third Quarter 2010 Exit Plan [Member]	Mar. 31, 2012 Americas [Member]	Mar. 31, 2011 Americas [Member] Third Quarter 2010 Exit Plan [Member]	Mar. 31, 2012 Costa Rica [Member] Center
Fair Value (Textual) [Abstract]
Impairment of long-lived assets	$ 149	$ 726		$ 3,800	$ 100	$ 700
Number of closed customer contact management center			4				1

The aggregate amount of write-downs for impairments recognized during the period for long-lived assets held for abandonment, exchange or sale.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 144

-Paragraph 27, 28, 29, 30

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585

Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 45

-Paragraph 15

-URI http://asc.fasb.org/extlink&oid=6390789&loc=d3e2611-110228

Name:	us-gaap_ImpairmentOfLongLivedAssetsToBeDisposedOf
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration