XML 58 R53.htm IDEA: XBRL DOCUMENT v2.4.0.6

Cash, Cash Equivalents and Investments (Details 4) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2011
Short-term investments [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	$ 68,215
Short-term investments [Member] | Australia [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	3,235
Short-term investments [Member] | Canada [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	3,551
Short-term investments [Member] | France [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	3,374
Short-term investments [Member] | Germany [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	12,671
Short-term investments [Member] | Great Britain [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	17,619
Short-term investments [Member] | Japan [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	1,332
Short-term investments [Member] | Netherlands [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	14,526
Short-term investments [Member] | Supranational [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	2,865
Short-term investments [Member] | Sweden [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	5,500
Short-term investments [Member] | Switzerland [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	3,542
Long-term investments [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	61,799
Long-term investments [Member] | Austria [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	3,062
Long-term investments [Member] | Canada [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	4,568
Long-term investments [Member] | France [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	4,100
Long-term investments [Member] | Germany [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	20,020
Long-term investments [Member] | Great Britain [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	6,346
Long-term investments [Member] | Japan [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	1,853
Long-term investments [Member] | Netherlands [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	13,790
Long-term investments [Member] | Sweden [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	1,004
Long-term investments [Member] | Switzerland [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	2,149
Long-term investments [Member] | Denmark [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	1,694
Long-term investments [Member] | Finland [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	1,880
Long-term investments [Member] | Norway [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	1,333
Treasury bills [Member] | Short-term investments [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	1,945
Treasury bills [Member] | Short-term investments [Member] | Australia [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	0
Treasury bills [Member] | Short-term investments [Member] | Canada [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	0
Treasury bills [Member] | Short-term investments [Member] | France [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	0
Treasury bills [Member] | Short-term investments [Member] | Germany [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	0
Treasury bills [Member] | Short-term investments [Member] | Great Britain [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	0
Treasury bills [Member] | Short-term investments [Member] | Japan [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	0
Treasury bills [Member] | Short-term investments [Member] | Netherlands [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	1,945
Treasury bills [Member] | Short-term investments [Member] | Supranational [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	0
Treasury bills [Member] | Short-term investments [Member] | Sweden [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	0
Treasury bills [Member] | Short-term investments [Member] | Switzerland [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	0
Corporate bonds [Member] | Short-term investments [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	35,077
Corporate bonds [Member] | Short-term investments [Member] | Australia [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	3,235
Corporate bonds [Member] | Short-term investments [Member] | Canada [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	3,551
Corporate bonds [Member] | Short-term investments [Member] | France [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	3,374
Corporate bonds [Member] | Short-term investments [Member] | Germany [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	5,062
Corporate bonds [Member] | Short-term investments [Member] | Great Britain [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	10,836
Corporate bonds [Member] | Short-term investments [Member] | Japan [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	1,332
Corporate bonds [Member] | Short-term investments [Member] | Netherlands [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	2,202
Corporate bonds [Member] | Short-term investments [Member] | Supranational [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	0
Corporate bonds [Member] | Short-term investments [Member] | Sweden [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	1,943
Corporate bonds [Member] | Short-term investments [Member] | Switzerland [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	3,542
Corporate bonds [Member] | Long-term investments [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	24,777
Corporate bonds [Member] | Long-term investments [Member] | Austria [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	0
Corporate bonds [Member] | Long-term investments [Member] | Canada [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	0
Corporate bonds [Member] | Long-term investments [Member] | France [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	4,100
Corporate bonds [Member] | Long-term investments [Member] | Germany [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	3,498
Corporate bonds [Member] | Long-term investments [Member] | Great Britain [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	6,346
Corporate bonds [Member] | Long-term investments [Member] | Japan [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	1,853
Corporate bonds [Member] | Long-term investments [Member] | Netherlands [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	6,831
Corporate bonds [Member] | Long-term investments [Member] | Sweden [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	0
Corporate bonds [Member] | Long-term investments [Member] | Switzerland [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	2,149
Corporate bonds [Member] | Long-term investments [Member] | Denmark [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	0
Corporate bonds [Member] | Long-term investments [Member] | Finland [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	0
Corporate bonds [Member] | Long-term investments [Member] | Norway [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	0
Agency bonds [Member] | Short-term investments [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	25,903
Agency bonds [Member] | Short-term investments [Member] | Australia [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	0
Agency bonds [Member] | Short-term investments [Member] | Canada [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	0
Agency bonds [Member] | Short-term investments [Member] | France [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	0
Agency bonds [Member] | Short-term investments [Member] | Germany [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	3,636
Agency bonds [Member] | Short-term investments [Member] | Great Britain [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	5,466
Agency bonds [Member] | Short-term investments [Member] | Japan [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	0
Agency bonds [Member] | Short-term investments [Member] | Netherlands [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	10,379
Agency bonds [Member] | Short-term investments [Member] | Supranational [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	2,865
Agency bonds [Member] | Short-term investments [Member] | Sweden [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	3,557
Agency bonds [Member] | Short-term investments [Member] | Switzerland [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	0
Agency bonds [Member] | Long-term investments [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	9,968
Agency bonds [Member] | Long-term investments [Member] | Austria [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	3,062
Agency bonds [Member] | Long-term investments [Member] | Canada [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	4,568
Agency bonds [Member] | Long-term investments [Member] | France [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	0
Agency bonds [Member] | Long-term investments [Member] | Germany [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	0
Agency bonds [Member] | Long-term investments [Member] | Great Britain [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	0
Agency bonds [Member] | Long-term investments [Member] | Japan [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	0
Agency bonds [Member] | Long-term investments [Member] | Netherlands [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	1,334
Agency bonds [Member] | Long-term investments [Member] | Sweden [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	1,004
Agency bonds [Member] | Long-term investments [Member] | Switzerland [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	0
Agency bonds [Member] | Long-term investments [Member] | Denmark [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	0
Agency bonds [Member] | Long-term investments [Member] | Finland [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	0
Agency bonds [Member] | Long-term investments [Member] | Norway [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	0
Sovereign bonds [Member] | Short-term investments [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	3,973
Sovereign bonds [Member] | Short-term investments [Member] | Australia [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	0
Sovereign bonds [Member] | Short-term investments [Member] | Canada [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	0
Sovereign bonds [Member] | Short-term investments [Member] | France [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	0
Sovereign bonds [Member] | Short-term investments [Member] | Germany [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	3,973
Sovereign bonds [Member] | Short-term investments [Member] | Great Britain [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	0
Sovereign bonds [Member] | Short-term investments [Member] | Japan [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	0
Sovereign bonds [Member] | Short-term investments [Member] | Netherlands [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	0
Sovereign bonds [Member] | Short-term investments [Member] | Supranational [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	0
Sovereign bonds [Member] | Short-term investments [Member] | Sweden [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	0
Sovereign bonds [Member] | Short-term investments [Member] | Switzerland [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	0
Sovereign bonds [Member] | Long-term investments [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	22,354
Sovereign bonds [Member] | Long-term investments [Member] | Austria [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	0
Sovereign bonds [Member] | Long-term investments [Member] | Canada [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	0
Sovereign bonds [Member] | Long-term investments [Member] | France [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	0
Sovereign bonds [Member] | Long-term investments [Member] | Germany [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	16,522
Sovereign bonds [Member] | Long-term investments [Member] | Great Britain [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	0
Sovereign bonds [Member] | Long-term investments [Member] | Japan [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	0
Sovereign bonds [Member] | Long-term investments [Member] | Netherlands [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	3,952
Sovereign bonds [Member] | Long-term investments [Member] | Sweden [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	0
Sovereign bonds [Member] | Long-term investments [Member] | Switzerland [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	0
Sovereign bonds [Member] | Long-term investments [Member] | Denmark [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	0
Sovereign bonds [Member] | Long-term investments [Member] | Finland [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	1,880
Sovereign bonds [Member] | Long-term investments [Member] | Norway [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	0
Covered bonds [Member] | Short-term investments [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	1,317
Covered bonds [Member] | Short-term investments [Member] | Australia [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	0
Covered bonds [Member] | Short-term investments [Member] | Canada [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	0
Covered bonds [Member] | Short-term investments [Member] | France [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	0
Covered bonds [Member] | Short-term investments [Member] | Germany [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	0
Covered bonds [Member] | Short-term investments [Member] | Great Britain [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	1,317
Covered bonds [Member] | Short-term investments [Member] | Japan [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	0
Covered bonds [Member] | Short-term investments [Member] | Netherlands [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	0
Covered bonds [Member] | Short-term investments [Member] | Supranational [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	0
Covered bonds [Member] | Short-term investments [Member] | Sweden [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	0
Covered bonds [Member] | Short-term investments [Member] | Switzerland [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	0
Covered bonds [Member] | Long-term investments [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	4,700
Covered bonds [Member] | Long-term investments [Member] | Austria [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	0
Covered bonds [Member] | Long-term investments [Member] | Canada [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	0
Covered bonds [Member] | Long-term investments [Member] | France [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	0
Covered bonds [Member] | Long-term investments [Member] | Germany [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	0
Covered bonds [Member] | Long-term investments [Member] | Great Britain [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	0
Covered bonds [Member] | Long-term investments [Member] | Japan [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	0
Covered bonds [Member] | Long-term investments [Member] | Netherlands [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	1,673
Covered bonds [Member] | Long-term investments [Member] | Sweden [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	0
Covered bonds [Member] | Long-term investments [Member] | Switzerland [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	0
Covered bonds [Member] | Long-term investments [Member] | Denmark [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	1,694
Covered bonds [Member] | Long-term investments [Member] | Finland [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	0
Covered bonds [Member] | Long-term investments [Member] | Norway [Member]
Summery of available-for-sale investments held in its international portfolio
Available for sale investments	$ 1,333

X

- Definition

This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This item represents Available-for-sale Securities which consist of all investments in certain debt and equity securities neither classified as trading or held-to-maturity securities. A debt security represents a creditor relationship with an enterprise. Debt securities include, among other items, US Treasury securities, US government securities, municipal securities, corporate bonds, convertible debt, commercial paper, and all securitized debt instruments. An equity security represents an ownership interest in an enterprise or the right to acquire or dispose of an ownership interest in an enterprise at fixed or determinable prices. Equity securities include, among other things, common stock, certain preferred stock, warrant rights, call options, and put options, but do not include convertible debt. An entity may opt to provide the reader with additional narrative text to better understand the nature of investments in debt and equity securities which are categorized as Available-for-sale.

+ References

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 115

-Paragraph 12

-Subparagraph b

-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 320

-SubTopic 10

-Section 25

-Paragraph 1

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=6379932&loc=d3e22054-111558



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

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Available-for-Sale Securities

-URI http://asc.fasb.org/extlink&oid=6505594

+ Details

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

X

- Details

Name:	us-gaap_FinancialInstrumentsFinancialAssetsBalanceSheetGroupingsAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration