XML 93 R38.htm IDEA: XBRL DOCUMENT
v2.4.0.6

Fair Value Measurement of Assets and Liabilities (Details) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2012 | Dec. 31, 2011
--- | --- | ---
Fair Value, Measurements, Recurring [Member] |  |
Cash equivalents |  |
Total cash equivalents | $ 3,476 | $ 30,921
Available-for-sale: |  |
Total short-term marketable securities | 38,064 | 28,267
Total long-term marketable securities | 1,201 | 13,495
Total financial assets | 42,741 | 72,683
Fair Value, Measurements, Recurring [Member] | Government agency securities [Member] |  |
Available-for-sale: |  |
Total short-term marketable securities | 3,266 | 6,912
Total long-term marketable securities |  | 3,738
Fair Value, Measurements, Recurring [Member] | Municipal bonds [Member] |  |
Available-for-sale: |  |
Total short-term marketable securities | 11,260 | 8,384
Total long-term marketable securities |  | 5,969
Fair Value, Measurements, Recurring [Member] | Certificates of deposit [Member] |  |
Available-for-sale: |  |
Total short-term marketable securities | 6,205 | 4,321
Total long-term marketable securities | 1,201 | 3,788
Fair Value, Measurements, Recurring [Member] | Corporate debentures / bonds [Member] |  |
Available-for-sale: |  |
Total short-term marketable securities | 17,333 | 8,612
Fair Value, Measurements, Recurring [Member] | Marketable equity securities [Member] |  |
Available-for-sale: |  |
Total short-term marketable securities |  | 38
Fair Value, Measurements, Recurring [Member] | Money market funds [Member] |  |
Cash equivalents |  |
Total cash equivalents | 47 | 25,137
Fair Value, Measurements, Recurring [Member] | US Treasury securities [Member] |  |
Cash equivalents |  |
Total cash equivalents | 3,429 | 5,784
Level 1 [Member] |  |
Cash equivalents |  |
Total cash equivalents | 47 | 25,137
Available-for-sale: |  |
Total short-term marketable securities | 0 | 38
Total long-term marketable securities | 0 | 0
Total financial assets | 47 | 25,175
Level 1 [Member] | Government agency securities [Member] |  |
Available-for-sale: |  |
Total short-term marketable securities | 0 | 0
Total long-term marketable securities |  | 0
Level 1 [Member] | Municipal bonds [Member] |  |
Available-for-sale: |  |
Total short-term marketable securities | 0 | 0
Total long-term marketable securities |  | 0
Level 1 [Member] | Certificates of deposit [Member] |  |
Available-for-sale: |  |
Total short-term marketable securities | 0 | 0
Total long-term marketable securities | 0 | 0
Level 1 [Member] | Corporate debentures / bonds [Member] |  |
Available-for-sale: |  |
Total short-term marketable securities | 0 | 0
Level 1 [Member] | Marketable equity securities [Member] |  |
Available-for-sale: |  |
Total short-term marketable securities |  | 38
Level 1 [Member] | Money market funds [Member] |  |
Cash equivalents |  |
Total cash equivalents | 47 | 25,137
Level 1 [Member] | US Treasury securities [Member] |  |
Cash equivalents |  |
Total cash equivalents | 0 | 0
Level 2 [Member] |  |
Cash equivalents |  |
Total cash equivalents | 3,429 | 5,784
Available-for-sale: |  |
Total short-term marketable securities | 38,064 | 28,229
Total long-term marketable securities | 1,201 | 13,495
Total financial assets | 42,694 | 47,508
Level 2 [Member] | Government agency securities [Member] |  |
Available-for-sale: |  |
Total short-term marketable securities | 3,266 | 6,912
Total long-term marketable securities |  | 3,738
Level 2 [Member] | Municipal bonds [Member] |  |
Available-for-sale: |  |
Total short-term marketable securities | 11,260 | 8,384
Total long-term marketable securities |  | 5,969
Level 2 [Member] | Certificates of deposit [Member] |  |
Available-for-sale: |  |
Total short-term marketable securities | 6,205 | 4,321
Total long-term marketable securities | 1,201 | 3,788
Level 2 [Member] | Corporate debentures / bonds [Member] |  |
Available-for-sale: |  |
Total short-term marketable securities | 17,333 | 8,612
Level 2 [Member] | Marketable equity securities [Member] |  |
Available-for-sale: |  |
Total short-term marketable securities |  | 0
Level 2 [Member] | Money market funds [Member] |  |
Cash equivalents |  |
Total cash equivalents | 0 | 0
Level 2 [Member] | US Treasury securities [Member] |  |
Cash equivalents |  |
Total cash equivalents | $ 3,429 | $ 5,784

X
- Definition This element represents the aggregate of the assets reported on the balance sheet at period end measured at fair value by the entity. This element is intended to be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258 + Details
Name: | us-gaap_AssetsFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Details
Name: | us-gaap_AvailableForSaleSecuritiesAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_CashAndCashEquivalentsAtCarryingValueAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Amount of short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 1 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Cash Equivalents -URI http://asc.fasb.org/extlink&oid=6507016 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 8, 9 -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 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.1) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_CashEquivalentsAtCarryingValue
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The total amount of investments that are intended to be held for an extended period of time (longer than one operating cycle). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.12) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_LongTermInvestments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Investments which are intended to be sold in the short term (usually less than one year or the normal operating cycle, whichever is longer) including trading securities, available-for-sale securities, held-to-maturity securities, and other short-term investments not otherwise listed in the existing taxonomy. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.2) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Subparagraph g -Article 7 + Details
Name: | us-gaap_ShortTermInvestments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant