Equity Incentive Plan (Details)
$ / shares in Units, $ in Thousands |
|
|
|
12 Months Ended |
|
|
Apr. 03, 2017
$ / shares
shares
|
Apr. 11, 2016
USD ($)
item
$ / shares
shares
|
Jul. 22, 2014 |
Dec. 31, 2017
USD ($)
shares
|
Dec. 31, 2016
USD ($)
shares
|
Jul. 12, 2013
shares
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
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|
|
|
|
|
| Shares reserved for issuance |
|
|
|
1,625,000
|
|
625,000
|
| Additional shares authorized, split adjusted |
|
|
|
1,000,000
|
|
|
| Unamortized cost of options | $ |
|
|
|
$ 300
|
$ 300
|
|
| Options exercisable |
|
|
|
375,417
|
240,000
|
|
| Amortization period |
|
|
|
8 months 12 days
|
8 months 12 days
|
|
| Stock options granted |
|
|
|
37,500
|
425,000
|
|
| Options exercise price | $ / shares |
|
$ 4.00
|
|
|
|
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| Number of vesting tranches | item |
|
2
|
|
|
|
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| Service requirement for vesting of option grants |
|
3 years
|
|
|
|
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| Options vesting on anniversary date, as a percent |
|
33.00%
|
|
|
|
|
| Stock option term |
|
10 years
|
|
|
|
|
| Amortization adjustment for option modification | $ |
|
$ 23
|
|
|
|
|
| Compensation expense for stock options | $ |
|
|
|
$ 447
|
$ 904
|
|
| Intrinsic value of exercisable options | $ |
|
|
|
$ 0
|
|
|
| Weighted-average remaining contractual life of the options outstanding |
|
|
|
6 years 8 months 12 days
|
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|
| Senior executives |
|
|
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
|
|
| Stock options granted |
37,500
|
|
|
|
|
|
| Options exercise price | $ / shares |
$ 4.00
|
|
|
|
|
|
| Service requirement for vesting of option grants |
3 years
|
|
|
|
|
|
| Options vesting on anniversary date, as a percent |
0.33%
|
|
|
|
|
|
| Stock option term |
10 years
|
|
|
|
|
|
| CEO [Member] |
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|
|
|
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
|
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| Vesting period |
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|
36 months
|
|
|
|
| Options cancelled |
|
125,000
|
|
|
|
|
| Chairman of the Board |
|
|
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
|
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| Options cancelled |
|
212,500
|
|
|
|
|
| Tranche A - base vesting date employee start date |
|
|
|
|
|
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| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
|
|
| Stock options granted |
|
240,000
|
|
|
|
|
| Tranche B - base vesting date April 11, 2016 |
|
|
|
|
|
|
| Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
|
|
|
|
|
|
| Stock options granted |
|
185,000
|
|
|
|
|