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Equity Incentive Plan - 20F (Details) $ / shares in Units, $ in Thousands |  |  |  |  |  |  |  | 9 Months Ended | 12 Months Ended |  |  |
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Jan. 08, 2016 | Oct. 01, 2015 $ / shares shares | Jan. 10, 2014 shares | Jan. 10, 2013 shares | Jan. 10, 2012 shares | Jun. 24, 2011 | Feb. 16, 2011 Director $ / shares shares | Sep. 30, 2016 USD ($) | Sep. 30, 2015 USD ($) | Dec. 31, 2015 USD ($) shares | Dec. 31, 2014 USD ($) | Dec. 31, 2013 USD ($) | Jul. 02, 2015 shares | May 31, 2012 shares | Jan. 12, 2011 shares
Equity Incentive Plan [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares of common stock reserved for issuance (in shares) |  |  |  |  |  |  |  |  |  |  |  |  | 856,667 | 583,334 | 8,750,000
Common stock, reverse split ratio | 0.2 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unrecognized cost for non-vested shares | $ |  |  |  |  |  |  |  | $ 374 |  | $ 521 | $ 0 |  |  |  |
Subsequent Event [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity Incentive Plan [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock, reverse split ratio | 0.2 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity Incentive Plan [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity Incentive Plan [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stock, reverse split ratio |  |  |  |  |  | 0.0666667 |  |  |  |  |  |  |  |  |
Equity Incentive Plan [Member] | Restricted Stock [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity Incentive Plan [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares granted (in shares) |  | 189,000 |  |  |  |  | 666 |  |  |  |  |  |  |  |
Number of executive directors receiving grants of shares | Director |  |  |  |  |  |  | 2 |  |  |  |  |  |  |  |
Fair value of equity incentive plan per share (in dollars per share) | $ / shares |  | $ 3.70 |  |  |  |  | $ 66.40 |  |  |  |  |  |  |  |
Shares vested (in shares) |  |  | 219 | 222 | 223 |  |  |  |  |  |  |  |  |  |
Equity Incentive Plan [Member] | Restricted Stock [Member] | Executive Directors [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity Incentive Plan [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares granted (in shares) |  | 36,000 |  |  |  |  | 533 |  |  |  |  |  |  |  |
Vesting period |  |  |  |  |  |  |  |  |  | 3 years |  |  |  |  |
Equity Incentive Plan [Member] | Restricted Stock [Member] | Certain Other Employees [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity Incentive Plan [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares granted (in shares) |  | 153,000 |  |  |  |  | 133 |  |  |  |  |  |  |  |
Vesting period |  |  |  |  |  |  |  |  |  | 3 years |  |  |  |  |
Shares vested (in shares) |  | 25,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Equity Incentive Plan [Member] | Restricted Stock [Member] | Certain Other Employees [Member] | Vesting October 1, 2016 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity Incentive Plan [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares outstanding (in shares) |  |  |  |  |  |  |  |  |  | 33,000 |  |  |  |  |
Equity Incentive Plan [Member] | Restricted Stock [Member] | Certain Other Employees [Member] | Vesting October 1, 2017 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity Incentive Plan [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares outstanding (in shares) |  |  |  |  |  |  |  |  |  | 44,000 |  |  |  |  |
Equity Incentive Plan [Member] | Restricted Stock [Member] | Certain Other Employees [Member] | Vesting October 1, 2018 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity Incentive Plan [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares outstanding (in shares) |  |  |  |  |  |  |  |  |  | 51,000 |  |  |  |  |
Equity Incentive Plan [Member] | Restricted Stock [Member] | Board of Directors [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity Incentive Plan [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Vesting period |  |  |  |  |  |  |  |  |  | 2 years |  |  |  |  |
Shares vested (in shares) |  | 12,000 |  |  |  |  |  |  |  |  |  |  |  |  |
Equity Incentive Plan [Member] | Restricted Stock [Member] | Board of Directors [Member] | Vesting October 1, 2016 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity Incentive Plan [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares outstanding (in shares) |  |  |  |  |  |  |  |  |  | 12,000 |  |  |  |  |
Equity Incentive Plan [Member] | Restricted Stock [Member] | Board of Directors [Member] | Vesting October 1, 2017 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity Incentive Plan [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Shares outstanding (in shares) |  |  |  |  |  |  |  |  |  | 12,000 |  |  |  |  |
General and Administrative Expense [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity Incentive Plan [Abstract] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Share-based compensation expense | $ |  |  |  |  |  |  |  | $ 119 | $ 0 | $ 178 | $ 0 | $ 15 |  |  |

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- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 14.F) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Unrecognized cost of unvested share-based compensation awards. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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