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Cash, Cash Equivalents and Marketable Securities (Tables) | 3 Months Ended
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Mar. 31, 2016
Investments in Marketable Securities | Investments in marketable securities consisted of the following at March 31, 2016 (in thousands):
|  | March 31, 2016 |
|  | Amortized Cost |  |  | Gross Unrealized Gain |  |  | Gross Unrealized Loss |  |  | Fair Value |
Marketable securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Government and agency securities |  | $ | 5,778 |  |  | $ | — |  |  | $ | — |  |  | $ | 5,778 |
Corporate and other debt securities |  |  | 10,700 |  |  |  | 7 |  |  |  | (3 | ) |  |  | 10,704 |
|  |  | 16,478 |  |  |  | 7 |  |  |  | (3 | ) |  |  | 16,482 |
Long-term marketable securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Government and agency securities |  |  | 417 |  |  |  | — |  |  |  | — |  |  |  | 417 |
Corporate and other debt securities |  |  | 800 |  |  |  | — |  |  |  | — |  |  |  | 800 |
|  |  | 1,217 |  |  |  | — |  |  |  | — |  |  |  | 1,217 |
Total |  | $ | 17,695 |  |  | $ | 7 |  |  | $ | (3 | ) |  | $ | 17,699 |
Investments in marketable securities consisted of the following at December 31, 2015 (in thousands):
|  | December 31, 2015 |
|  | Amortized Cost |  |  | Gross Unrealized Gain |  |  | Gross Unrealized Loss |  |  | Fair Value |
Marketable securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Government and agency securities |  | $ | 7,029 |  |  | $ | — |  |  | $ | (6 | ) |  | $ | 7,023 |
Corporate and other debt securities |  |  | 10,659 |  |  |  | 7 |  |  |  | (7 | ) |  |  | 10,659 |
|  |  | 17,688 |  |  |  | 7 |  |  |  | (13 | ) |  |  | 17,682 |
Long-term marketable securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
U.S. Government and agency securities |  |  | 838 |  |  |  | — |  |  |  | (2 | ) |  |  | 836 |
Corporate and other debt securities |  |  | 800 |  |  |  | — |  |  |  | (3 | ) |  |  | 797 |
|  |  | 1,638 |  |  |  | — |  |  |  | (5 | ) |  |  | 1,633 |
Total |  | $ | 19,326 |  |  | $ | 7 |  |  | $ | (18 | ) |  | $ | 19,315 |
Contractual Maturities of Marketable Securities | The contractual maturities of money market funds and marketable securities at March 31, 2016 were as follows:
|  | Amortized Cost |  |  | Fair Value |
Due in 1 year or less |  | $ | 16,478 |  |  | $ | 16,482 |
Due in 1 to 2 years |  |  | 1,217 |  |  |  | 1,217 |
|  | $ | 17,695 |  |  | $ | 17,699 |

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- Definition Tabular disclosure of available-for-sale securities which includes, but is not limited to, changes in the cost basis and fair value, fair value and gross unrealized gain (loss), fair values by type of security, contractual maturity and classification, amortized cost basis, contracts to acquire securities to be accounted for as available-for-sale, debt maturities, transfers to trading, change in net unrealized holding gain (loss) net of tax, continuous unrealized loss position fair value, aggregate losses qualitative disclosures, other than temporary impairment (OTTI) losses or other disclosures related to available for sale securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 320 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6957658&loc=d3e62557-112803 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 7 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27337-111563 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27198-111563 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 320 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6957658&loc=d3e62586-112803 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27161-111563 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27357-111563 Reference 7: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=27724398&loc=d3e27290-111563 + Details
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- Definition Tabular disclosure of maturities of an entity's investments as well as any other information pertinent to the investments. + References No definition available. + Details
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