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Financial Instruments (Tables) | 6 Months Ended
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Jun. 30, 2016
Fair Value Disclosures [Abstract] |
Summary of Investments | Investments consist of the following as of June 30, 2016 and December 31, 2015 (dollars in thousands):
|  | June 30, 2016 |
|  |  |  |  |  | Gross Unrealized |  |  |  |  |
|  | Cost |  |  | Gain |  |  | (Loss) |  |  | Fair Value |
Short-term investments (available for sale): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Non-governmental debt securities |  | $ | 105,475 |  |  | $ | 69 |  |  | $ | (33 | ) |  | $ | 105,511 |
Treasury and federal agencies |  |  | 35,260 |  |  |  | 47 |  |  |  | (6 | ) |  |  | 35,301 |
Total short-term investments |  |  | 140,735 |  |  |  | 116 |  |  |  | (39 | ) |  |  | 140,812 |
Restricted short-term investments (available for sale): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Non-governmental debt securities |  |  | 9,610 |  |  |  | - |  |  |  | - |  |  |  | 9,610 |
Long-term investments (available for sale): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Municipal bond |  |  | 7,850 |  |  |  | - |  |  |  | (476 | ) |  |  | 7,374 |
Total investments (available for sale) |  | $ | 158,195 |  |  | $ | 116 |  |  | $ | (515 | ) |  | $ | 157,796 |
|  | December 31, 2015 |
|  |  |  |  |  | Gross Unrealized |  |  |  |  |
|  | Cost |  |  | Gain |  |  | (Loss) |  |  | Fair Value |
Short-term investments (available for sale): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Municipal bonds |  | $ | 1,500 |  |  | $ | - |  |  | $ | (11 | ) |  | $ | 1,489 |
Non-governmental debt securities |  |  | 76,999 |  |  |  | - |  |  |  | (242 | ) |  |  | 76,757 |
Treasury and federal agencies |  |  | 36,779 |  |  |  | 3 |  |  |  | (127 | ) |  |  | 36,655 |
Total short-term investments |  |  | 115,278 |  |  |  | 3 |  |  |  | (380 | ) |  |  | 114,901 |
Long-term investments (available for sale): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Municipal bond |  |  | 7,850 |  |  |  | - |  |  |  | (476 | ) |  |  | 7,374 |
Total investments (available for sale) |  | $ | 123,128 |  |  | $ | 3 |  |  | $ | (856 | ) |  | $ | 122,275 |
Investments Measured at Fair Value on Recurring Basis | Investments measured at fair value on a recurring basis subject to the disclosure requirements of FASB ASC Topic 820 – Fair Value Measurements at June 30, 2016 and December 31, 2015 were as follows (dollars in thousands):
|  | As of June 30, 2016 |
|  | Level 1 |  |  | Level 2 |  |  | Level 3 |  |  | Total |
Municipal bonds |  | $ | - |  |  | $ | - |  |  | $ | 7,374 |  |  | $ | 7,374 |
Non-governmental debt securities |  |  | 35,368 |  |  |  | 79,753 |  |  |  | - |  |  |  | 115,121 |
Treasury and federal agencies |  |  | - |  |  |  | 35,301 |  |  |  | - |  |  |  | 35,301 |
Totals |  | $ | 35,368 |  |  | $ | 115,054 |  |  | $ | 7,374 |  |  | $ | 157,796 |
|  | As of December 31, 2015 |
|  | Level 1 |  |  | Level 2 |  |  | Level 3 |  |  | Total |
Municipal bonds |  | $ | - |  |  | $ | 1,489 |  |  | $ | 7,374 |  |  | $ | 8,863 |
Non-governmental debt securities |  |  | - |  |  |  | 76,757 |  |  |  | - |  |  |  | 76,757 |
Treasury and federal agencies |  |  | - |  |  |  | 36,655 |  |  |  | - |  |  |  | 36,655 |
Totals |  | $ | - |  |  | $ | 114,901 |  |  | $ | 7,374 |  |  | $ | 122,275 |
Assets Measured at Fair Value on Recurring Basis Using Significant Unobservable Inputs (Level 3) | The following table presents a rollforward of our assets measured at fair value on a recurring basis using significant unobservable inputs (Level 3) as defined in FASB ASC Topic 820 for the year to date ended June 30, 2016 (dollars in thousands):
Balance at December 31, 2015 |  | $ | 7,374 |
Unrealized gain (loss) |  |  | - |
Balance at June 30, 2016 |  | $ | 7,374 |
Schedule of Maintenance Fee Payment to CCKF | We make periodic operating maintenance payments for our use of intellipathTM. The total fees paid to CCKF for the quarters and years to date ended June 30, 2016 and 2015 were as follows (dollars in thousands):
| Maintenance Fee Payments |
For the quarter ended June 30, 2016 | $ | 345 |
For the quarter ended June 30, 2015 | $ | 343 |
For the year to date ended June 30, 2016 | $ | 687 |
For the year to date ended June 30, 2015 | $ | 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=73527792&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=73527792&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=73527792&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=73527792&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=73527792&loc=d3e27290-111563 + Details
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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 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 Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66048111&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 1 -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19190-110258 Reference 3: 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=66048111&loc=d3e19207-110258 + Details
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- Definition Tabular disclosure of the fair value measurement of assets using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes during the period 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 asset. + 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=66048111&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=66048111&loc=d3e19279-110258 + Details
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- Definition Tabular disclosure of related party transactions. Examples of related party transactions include, but are not limited to, transactions between (a) a parent company and its subsidiary; (b) subsidiaries of a common parent; (c) and entity and its principal owners and (d) affiliates. + References No definition available. + Details
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