Segments and Geographic Information - Revenues for the Company's Products and Services (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Segment Reporting Information [Line Items]
Revenues	$ 1,263,460	$ 1,127,698	$ 1,169,267
Outsourced Customer Contract Management Services [Member]
Segment Reporting Information [Line Items]
Revenues	1,240,328	1,104,442	1,145,002
Fulfillment Services [Member]
Segment Reporting Information [Line Items]
Revenues	16,953	16,357	16,717
Enterprise Support Services [Member]
Segment Reporting Information [Line Items]
Revenues	$ 6,179	$ 6,899	$ 7,548

Amount of revenue recognized from goods sold, services rendered, insurance premiums, or other activities that constitute an earning process. Includes, but is not limited to, investment and interest income before deduction of interest expense when recognized as a component of revenue, and sales and trading gain (loss).

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 225

-SubTopic 10

-Section S99

-Paragraph 2

-Subparagraph (SX 210.5-03.1)

-URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688

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

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Article 5

Name:	us-gaap_Revenues
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration