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Fair Value Measurements (Tables) | 12 Months Ended
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Dec. 31, 2016
Fair Value Disclosures [Abstract] |
Schedule of Estimated Fair Values of Remaining Financial Instruments | The following table provides the estimated fair values of the remaining financial instruments:
|  | As of December 31, 2016 |  | As of December 31, 2015
(in thousands) |  | Carrying Value |  | Fair Value |  | Carrying Value |  | Fair Value
Financial Instruments: |  |  |  |  |  |  |  |
Investment securities: |  |  |  |  |  |  |  |
Investment securities, restricted, long-term |  | $ | — |  |  | $ | — |  |  | $ | 336 |  |  | $ | 336 |
Cost method investment |  | $ | 1,016 |  |  | $ | 1,016 |  |  | $ | 2,776 |  |  | $ | 2,776 |
Borrowings and Notes Payable |  |  |  |  |  |  |  |
Short-term borrowings, net of discount and deferred loan costs, related party |  | $ | — |  |  | $ | — |  |  | $ | 12,676 |  |  | $ | 12,676 |
Current portion of notes payable, related parties (1) |  | $ | — |  |  | $ | — |  |  | $ | 1,837 |  |  | $ | 1,457 |
Long-term portion of notes payable, related parties |  | $ | — |  |  | $ | — |  |  | $ | 13,512 |  |  | $ | 13,273 |
Highview technology license payable |  | $ | 207 |  |  | $ | 207 |  |  | $ | 519 |  |  | $ | 519 |
Highview technology license payable, long-term |  | $ | — |  |  | $ | — |  |  | $ | 1,038 |  |  | $ | 1,038 |
Stock appreciation rights, liability-classified equity award |  | $ | — |  |  | $ | — |  |  | $ | 742 |  |  | $ | 742 |
(1) The fair value related to the DSI business owner note payable amounts as of December 31, 2015 was determined using the settlement agreement amount of $0.3 million, as described in Note 9.
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis | Financial instruments carried and measured at fair value on a recurring basis are presented in the table below according to the fair value hierarchy described above. There were no financial instruments carried and measured at fair value on a recurring basis as of December 31, 2016.
|  | As of December 31, 2015
|  | Fair Value Measurement Using
(in thousands) |  | Level 1 |  | Level 2 |  | Level 3 |  | Fair Value
Assets: |  |  |  |  |  |  |  |
Investment securities, restricted, long-term |  | $ | — |  |  | $ | 336 |  |  | $ | — |  |  | $ | 336 |
Total assets at fair value |  | $ | — |  |  | $ | 336 |  |  | $ | — |  |  | $ | 336 |
Liabilities: |  |  |  |  |  |  |  |
Stock appreciation rights, liability-classified equity award |  | $ | — |  |  | $ | 742 |  |  | $ | — |  |  | $ | 742 |
Total liabilities at fair value |  | $ | — |  |  | $ | 742 |  |  | $ | — |  |  | $ | 742 |

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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 of financial instruments, including financial assets and financial liabilities, and the measurements of those instruments, assets, and liabilities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=73719730&loc=d3e13476-108611 Reference 2: 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 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=73719730&loc=d3e13467-108611 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6447952&loc=d3e13220-108610 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6957238&loc=d3e14172-108612 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=73719730&loc=d3e13433-108611 + Details
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