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Fair Value of Financial Instruments (Tables) | 12 Months Ended
--- | ---
Dec. 31, 2012
Fair Value of Financial Instruments |
Schedule of estimated fair values of financial instruments outstanding | The estimated fair values of financial instruments outstanding at December 31, 2012 and 2011 were as follows (in thousands):
|  | 2012 |
--- | --- | --- | ---
|  | Cost |  | Unrealized Gains |  | Unrealized Losses |  | Fair Value |
Cash and cash equivalents |  | $ | 2,529 |  | $ | — |  | $ | — |  | $ | 2,529 |
Short-term investments: |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. government debt securities |  | $ | 15,852 |  | $ | 6 |  | $ | (2 | ) | $ | 15,856 |
Corporate notes |  |  | 14,471 |  |  | 8 |  |  | (4 | ) |  | 14,475 |
Certificates of deposit |  |  | 467 |  |  | — |  |  | — |  |  | 467 |
Total short-term investments |  | $ | 30,790 |  | $ | 14 |  | $ | (6 | ) | $ | 30,798 |
Long-term investments: |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. government debt securities |  | $ | 6,330 |  | $ | 2 |  | $ | — |  | $ | 6,332 |
Corporate notes |  |  | 1,050 |  |  | 1 |  |  | — |  |  | 1,051 |
Total long-term investments |  | $ | 7,380 |  | $ | 3 |  | $ | — |  | $ | 7,383 |
|  | 2011 |
--- | --- | --- | ---
|  | Cost |  | Unrealized Gains |  | Unrealized Losses |  | Fair Value |
Cash and cash equivalents |  | $ | 40,025 |  | $ | — |  | $ | — |  | $ | 40,025 |
Short-term investments: |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. government debt securities |  | $ | 4,834 |  | $ | 2 |  | $ | — |  | $ | 4,836 |
Corporate notes |  |  | 4,578 |  |  | 1 |  |  | (2 | ) |  | 4,577 |
Total short-term investments |  | $ | 9,412 |  | $ | 3 |  | $ | (2 | ) | $ | 9,413 |
Long-term investments: |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. government debt securities |  | $ | 5,721 |  | $ | 1 |  | $ | (1 | ) | $ | 5,721 |
Corporate notes |  |  | 2,816 |  |  | 2 |  |  | (2 | ) |  | 2,816 |
Total long-term investments |  | $ | 8,537 |  | $ | 3 |  | $ | (3 | ) | $ | 8,537 |
Schedule of cost and fair value of investments based on maturity groups | Cost and fair value of investments based on two maturity groups at December 31, 2011 and 2010 were as follows (in thousands):
|  | 2012 |
--- | --- | --- | ---
|  | Cost |  | Unrealized Gains |  | Unrealized Losses |  | Fair Value |
Due within 1 year |  | $ | 30,790 |  | $ | 14 |  | $ | (6 | ) | $ | 30,798 |
Due in 1-2 years |  |  | 7,380 |  |  | 3 |  |  | — |  |  | 7,383 |
Total |  | $ | 38,170 |  | $ | 17 |  | $ | (6 | ) | $ | 38,181 |
|  | 2011 |
--- | --- | --- | ---
|  | Cost |  | Unrealized Gains |  | Unrealized Losses |  | Fair Value |
Due within 1 year |  | $ | 9,412 |  | $ | 3 |  | $ | (2 | ) | $ | 9,413 |
Due in 1-2 years |  |  | 8,537 |  |  | 3 |  |  | (3 | ) |  | 8,537 |
Total |  | $ | 17,949 |  | $ | 6 |  | $ | (5 | ) | $ | 17,950 |
Schedule of fair value hierarchy for financial assets (cash equivalents and investments) | The following table represents the Company's fair value hierarchy for its financial assets (cash equivalents and investments) as of December 31, 2012 and 2011 (in thousands):
|  | 2012 |
--- | --- | --- | ---
|  | Fair Value |  | Level 1 |  | Level 2 |  | Level 3 |
Money market funds |  | $ | 1,407 |  | $ | 1,407 |  | $ | — |  | $ | — |
U.S. government debt securities |  |  | 22,289 |  |  | — |  |  | 22,289 |  |  | — |
Corporate notes |  |  | 16,226 |  |  | — |  |  | 16,226 |  |  | — |
Certificates of deposit |  |  | 467 |  |  | — |  |  | 467 |  |  | — |
Total assets |  | $ | 40,389 |  | $ | 1,407 |  | $ | 38,982 |  | $ | — |
|  | 2011 |
--- | --- | --- | ---
|  | Fair Value |  | Level 1 |  | Level 2 |  | Level 3 |
Money market funds |  | $ | 2,792 |  | $ | 2,792 |  | $ | — |  | $ | — |
Corporate notes |  |  | 7,393 |  |  | — |  |  | 7,393 |  |  | — |
U.S. government debt securities |  |  | 10,557 |  |  | — |  |  | 10,557 |  |  | — |
Total assets |  | $ | 20,742 |  | $ | 2,792 |  | $ | 17,950 |  | $ | — |
Summary of changes in fair value of the Company's acquisition-related earn-out liabilities measured at fair value using significant unobservable inputs (Level 3) |
|  | Fair Value |
--- | --- | --- | ---
Balance at December 31, 2010 |  | $ | 1,000 |
Payment of earn-out |  |  | (1,000 | )
Balance at December 31, 2011 |  | $ | — |

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- Definition Tabular disclosure of assets, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, by class that are measured at fair value on a recurring and/or nonrecurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 157 -Paragraph 6 -Footnote 4 -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 Statement of Financial Accounting Standard (FAS) -Number 157 -Paragraph 32 -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 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19190-110258 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a),(b) -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258 + Details
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- Definition Tabular disclosure of the fair value measurement of liabilities using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets), and gains or losses recognized in other comprehensive income (loss) and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issues, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs) by class of liability. + 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 (c) -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19207-110258 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=7578670&loc=d3e19279-110258 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 157 -Paragraph 32 -Subparagraph c -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. + Details
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