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Stockholder's Equity - Narrative (Details) - USD ($) $ / shares in Units, $ in Thousands |  |  | 3 Months Ended | 9 Months Ended
--- | --- | --- | --- | ---
Apr. 03, 2017 | May 09, 2016 | Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2017 | Sep. 30, 2016
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |  |
Business acquisition, equity interest issued or issuable, number of shares | 1,882,058 |  |  |  |  |
Share consideration given for Tealstone acquisition (1,882,058 shares) |  |  |  |  | $ 17,061 | $ 0
Allocated share-based compensation expense |  |  | $ 600 | $ 400 | 2,500 | 1,200
Employee service share-based compensation, nonvested awards, compensation cost not yet recognized |  |  | $ 1,100 | $ 2,300 | $ 1,100 | $ 2,300
Employee service share-based compensation, nonvested awards, compensation cost not yet recognized, period for recognition |  |  |  |  | 1 year 7 months 6 days |
Share-based compensation arrangement by share-based payment award, equity instruments other than options, nonvested, number |  |  | 500,000 |  | 500,000 |
Former chief executive officer |  |  |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |  |
Allocated share-based compensation expense |  |  | $ 700 |  | $ 700 |
Restricted stock |  |  |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |  |
Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period (in shares) |  |  | 8,000 |  | 174,410 |
Warrants to the Lenders Under the Loan Agreement |  |  |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |  |
Warrants and rights outstanding | $ 3,500 |  | $ 3,500 |  | $ 3,500 |
Warrants to the Lenders Under the Loan Agreement | Loan and security agreement |  |  |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |  |
Class of warrant or right, term | 5 years |  |  |  |  |
Class of warrant or right, number of securities called by warrants or rights (in shares) | 1,000,000 |  |  |  |  |
Class of warrant or right, exercise price of warrants or rights (USD per share) | $ 10.25 |  |  |  |  |
D.A. davidson and co. |  |  |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |  |
Stock issued during period, shares, new issues |  | 5,175,000 |  |  |  |
Share price (USD per share) |  | $ 4.00 |  |  |  |
Share price, net (USD per share) |  | $ 3.77 |  |  |  |
Net proceeds from stock issued |  | $ 19,100 |  |  |  |
Tealstone |  |  |  |  |  |
Subsidiary, Sale of Stock [Line Items] |  |  |  |  |  |
Business acquisition, equity interest issued or issuable, number of shares | 1,882,058 |  |  |  |  |
Share consideration given for Tealstone acquisition (1,882,058 shares) | $ 17,061 |  |  |  |  |

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