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Investments (Tables) | 12 Months Ended
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Dec. 31, 2015
Fair Value Disclosures [Abstract] |
Investments from Continuing Operations | Investments of our continuing operations consist of the following as of December 31, 2015 and 2014 (dollars in thousands):
|  | 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 |
|  | December 31, 2014 |
|  |  |  |  |  | Gross Unrealized |  |  |  |  |
|  | Cost |  |  | Gain |  |  | (Loss) |  |  | Fair Value |
Short-term investments (available for sale): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Municipal bonds |  | $ | 6,880 |  |  | $ | 1 |  |  | $ | (56 | ) |  | $ | 6,825 |
Non-governmental debt securities |  |  | 98,400 |  |  |  | 1 |  |  |  | (271 | ) |  |  | 98,130 |
Treasury and federal agencies |  |  | 17,928 |  |  |  | 6 |  |  |  | (31 | ) |  |  | 17,903 |
Total short-term investments |  |  | 123,208 |  |  |  | 8 |  |  |  | (358 | ) |  |  | 122,858 |
Long-term investments (available for sale): |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Municipal bond |  |  | 7,850 |  |  |  | - |  |  |  | (476 | ) |  |  | 7,374 |
Total investments (available for sale) |  | $ | 131,058 |  |  | $ | 8 |  |  | $ | (834 | ) |  | $ | 130,232 |
Schedule of Available-for-Sale Investments | A schedule of available-for-sale investments segregated by their original stated terms to maturity as of December 31, 2015 and 2014 are as follows (dollars in thousands):
|  | Less than one year |  |  | One to five years |  |  | Five to ten years |  |  | Greater than ten years |  |  | Total |
Original stated term to maturity of available-for-sale- investments as of December 31, 2015 |  | $ | 71,000 |  |  | $ | 43,552 |  |  | $ | - |  |  | $ | 7,723 |  |  | $ | 122,275 |
Original stated term to maturity of available-for-sale- investments as of December 31, 2014 |  | $ | 77,177 |  |  | $ | 44,182 |  |  | $ | 211 |  |  | $ | 8,662 |  |  | $ | 130,232 |
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 December 31, 2015 and 2014 were as follows (dollars in thousands):
|  | 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 |
|  | As of December 31, 2014 |
|  | Level 1 |  |  | Level 2 |  |  | Level 3 |  |  | Total |
Municipal bonds |  | $ | - |  |  | $ | 6,825 |  |  | $ | 7,374 |  |  | $ | 14,199 |
Non-governmental debt securities |  |  | - |  |  |  | 98,130 |  |  |  | - |  |  | $ | 98,130 |
Treasury and federal agencies |  |  | - |  |  |  | 17,903 |  |  |  | - |  |  |  | 17,903 |
Totals |  | $ | - |  |  | $ | 122,858 |  |  | $ | 7,374 |  |  | $ | 130,232 |
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 ended December 31, 2015 (dollars in thousands):
Balance at December 31, 2014 |  | $ | 7,374 |
Unrealized loss |  |  | - |
Balance at December 31, 2015 |  | $ | 7,374 |

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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 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 (a),(b) -URI http://asc.fasb.org/extlink&oid=36462937&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=36462937&loc=d3e19190-110258 + Details
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