Business Segment and Foreign Operations - Long-lived Assets (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
Schedule of Long-lived Assets
Long-lived tangible assets	$ 81,532	$ 83,067
United States [Member]
Schedule of Long-lived Assets
Long-lived tangible assets	5,242	5,541
People's Republic of China [Member]
Schedule of Long-lived Assets
Long-lived tangible assets	73,015	73,804
All Other Countries [Member]
Schedule of Long-lived Assets
Long-lived tangible assets	$ 3,275	$ 3,722

Long-lived assets other than financial instruments, long-term customer relationships of a financial institution, mortgage and other servicing rights, deferred policy acquisition costs, and deferred tax assets.

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 131

-Paragraph 38

-Subparagraph b(1)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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.

Name:	us-gaap_NoncurrentAssets
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant