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Equity Transactions (Tables) | 9 Months Ended
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Sep. 30, 2017
Equity [Abstract] |
Schedule of Reconciliation of Warrant Liability, Additional Paid-in Capital, Accumulated Deficit and Change in Fair Value of Warrant Liability on Balance Sheets | The following tables provide a reconciliation of Warrant liability, Additional paid-in capital, Accumulated deficit and Change in fair value of warrant liability on the consolidated balance sheets as of September 30, 2016, December 31, 2016, March 31, 2017, and June 30, 2017 (in thousands):
|  | Consolidated Balance Sheet |
|  | Related-party notes payable |  |  | Notes payable |  |  | Warrant liability |  |  | Additional paid-in capital |  |  | Accumulated deficit |
Balance, September 30, 2016 (Prior to adoption of ASU 2017-11) |  | $ | 883 |  |  | $ | 883 |  |  | $ | 1,761 |  |  | $ | 227,565 |  |  | $ | (222,185 | )
Change in valuation of notes payable |  |  | 359 |  |  |  | 359 |  |  |  | — |  |  |  | (718 | ) |  |  | — |
Reclassification of warrant liability |  |  | — |  |  |  | — |  |  |  | (1,761 | ) |  |  | 1,761 |  |  |  | — |
Change in fair value of warrant liability |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 335 |  |  |  | (335 | )
Change in interest (expense) income, net |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (17 | ) |  |  | 17 |
Balance, September 30, 2016 (After adoption of ASU 2017-11) |  | $ | 1,242 |  |  | $ | 1,242 |  |  | $ | — |  |  | $ | 228,926 |  |  | $ | (222,503 | )
|  | Consolidated Balance Sheet |
|  | Related-party notes payable |  |  | Notes payable |  |  | Warrant liability |  |  | Additional paid-in capital |  |  | Accumulated deficit |
Balance, December 31, 2016 (Prior to adoption of ASU 2017-11) |  | $ | 967 |  |  | $ | 967 |  |  | $ | 1,210 |  |  | $ | 227,889 |  |  | $ | (225,397 | )
Change in valuation of notes payable |  |  | 328 |  |  |  | 328 |  |  |  | — |  |  |  | (656 | ) |  |  | — |
Reclassification of warrant liability |  |  | — |  |  |  | — |  |  |  | (1,210 | ) |  |  | 1,210 |  |  |  | — |
Change in fair value of warrant liability |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 910 |  |  |  | (910 | )
Change in interest (expense) income, net |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (79 | ) |  |  | 79 |
Balance, December 31, 2016 (After adoption of ASU 2017-11) |  | $ | 1,295 |  |  | $ | 1,295 |  |  | $ | — |  |  | $ | 229,274 |  |  | $ | (226,228 | )
|  | Consolidated Balance Sheet |
|  | Related-party notes payable |  |  | Notes payable |  |  | Warrant liability |  |  | Additional paid-in capital |  |  | Accumulated deficit |
Balance, March 31, 2017 (Prior to adoption of ASU 2017-11) |  | $ | 1,062 |  |  | $ | 1,062 |  |  | $ | 502 |  |  | $ | 228,265 |  |  | $ | (227,629 | )
Change in valuation of notes payable |  |  | 298 |  |  |  | 298 |  |  |  | — |  |  |  | (596 | ) |  |  | — |
Reclassification of warrant liability |  |  | — |  |  |  | — |  |  |  | (502 | ) |  |  | 502 |  |  |  | — |
Change in fair value of warrant liability |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 1,618 |  |  |  | (1,618 | )
Change in interest (expense) income, net |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (139 | ) |  |  | 139 |
Balance, March 31, 2017 (After adoption of ASU 2017-11) |  | $ | 1,360 |  |  | $ | 1,360 |  |  | $ | — |  |  | $ | 229,650 |  |  | $ | (229,108 | )
|  | Consolidated Balance Sheet |
|  | Related-party notes payable |  |  | Notes payable |  |  | Warrant liability |  |  | Additional paid-in capital |  |  | Accumulated deficit |
Balance, June 30, 2017 (Prior to adoption of ASU 2017-11) |  | $ | 1,158 |  |  | $ | 1,158 |  |  | $ | 1,063 |  |  | $ | 230,657 |  |  | $ | (230,203 | )
Change in valuation of notes payable |  |  | 267 |  |  |  | 267 |  |  |  | — |  |  |  | (534 | ) |  |  | — |
Reclassification of warrant liability |  |  | — |  |  |  | — |  |  |  | (1,063 | ) |  |  | 1,063 |  |  |  | — |
Change in fair value of warrant liability |  |  | — |  |  |  | — |  |  |  | — |  |  |  | 1,060 |  |  |  | (1,060 | )
Change in interest (expense) income, net |  |  | — |  |  |  | — |  |  |  | — |  |  |  | (200 | ) |  |  | 200 |
Balance, June 30, 2017 (After adoption of ASU 2017-11) |  | $ | 1,425 |  |  | $ | 1,425 |  |  | $ | — |  |  | $ | 232,046 |  |  | $ | (231,063 | )

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