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v3.19.1

Restatement of Previously Issued Consolidated Financial Statements - Pre-2014 Restatement Adjustments (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2016 | Sep. 30, 2016 | Jun. 30, 2016 | Mar. 31, 2016 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
(Loss) income before taxes | $ (6,450) | $ (9,053) | $ (7,612) | $ (24,054) | $ (7,878) | $ (10,509) | $ (10,792) | $ (6,680) | $ (47,169) | $ (35,859) | $ (12,593) | $ 29,221 |
Stockholders' equity | 32,172 | $ 6,129 | $ 18,210 | $ 30,048 | 40,660 | $ 46,967 | $ 55,337 | 81,900 | 32,172 | 40,660 | 84,873 | 86,483 | $ 47,607
Common stock |  |  |  |  |  |  |  |  |  |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders' equity | 19 |  |  |  | 12 |  |  |  | 19 | 12 | 11 | 11 | 11
Additional paid-in capital |  |  |  |  |  |  |  |  |  |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders' equity | 123,838 |  |  |  | 86,764 |  |  |  | 123,838 | 86,764 | 83,377 | 81,746 | 61,930
Accumulated deficit |  |  |  |  |  |  |  |  |  |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders' equity | (82,147) |  |  |  | (34,535) |  |  |  | (82,147) | (34,535) | 12,937 | 15,828 | (5,649)
Treasury stock, at cost |  |  |  |  |  |  |  |  |  |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders' equity | $ (9,538) |  |  |  | $ (11,581) |  |  |  | $ (9,538) | $ (11,581) | (11,452) | (11,102) | (8,685)
Previously Reported |  |  |  |  |  |  |  |  |  |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
(Loss) income before taxes |  |  |  |  |  |  |  | (8,931) |  |  | 13,890 | 34,539 |
Stockholders' equity |  |  |  |  |  |  |  | 101,367 |  |  | 106,297 | 90,799 | 50,421
Previously Reported | Common stock |  |  |  |  |  |  |  |  |  |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders' equity |  |  |  |  |  |  |  |  |  |  |  |  | 11
Previously Reported | Additional paid-in capital |  |  |  |  |  |  |  |  |  |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders' equity |  |  |  |  |  |  |  |  |  |  |  |  | 57,308
Previously Reported | Accumulated deficit |  |  |  |  |  |  |  |  |  |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders' equity |  |  |  |  |  |  |  |  |  |  |  |  | (2,648)
Previously Reported | Treasury stock, at cost |  |  |  |  |  |  |  |  |  |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders' equity |  |  |  |  |  |  |  |  |  |  |  |  | (4,250)
Restatement Adjustments and Reclassifications |  |  |  |  |  |  |  |  |  |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
(Loss) income before taxes |  |  |  |  |  |  |  | 2,251 |  |  | (26,483) | (5,318) |
Stockholders' equity |  |  |  |  |  |  |  | (19,467) |  |  | (21,424) | (4,316) | (2,891)
Restatement Adjustments and Reclassifications | Common stock |  |  |  |  |  |  |  |  |  |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders' equity |  |  |  |  |  |  |  |  |  |  |  |  | 0
Restatement Adjustments and Reclassifications | Additional paid-in capital |  |  |  |  |  |  |  |  |  |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders' equity |  |  |  |  |  |  |  |  |  |  |  |  | 4,622
Restatement Adjustments and Reclassifications | Accumulated deficit |  |  |  |  |  |  |  |  |  |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders' equity |  |  |  |  |  |  |  |  |  |  |  |  | (3,079)
Restatement Adjustments and Reclassifications | Treasury stock, at cost |  |  |  |  |  |  |  |  |  |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Stockholders' equity |  |  |  |  |  |  |  |  |  |  |  |  | (4,435)
Product development cost | Restatement Adjustments and Reclassifications |  |  |  |  |  |  |  |  |  |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
(Loss) income before taxes |  |  |  |  |  |  |  | 123 |  |  | (1,001) | (2,397) | (3,600)
Inventory valuation | Restatement Adjustments and Reclassifications |  |  |  |  |  |  |  |  |  |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
(Loss) income before taxes |  |  |  |  |  |  |  | (404) |  |  | (1,069) | 38 | (1,500)
Accrued liabilities | Restatement Adjustments and Reclassifications |  |  |  |  |  |  |  |  |  |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
(Loss) income before taxes |  |  |  |  |  |  |  | 422 |  |  | (1,106) | 591 | 300
Equity investment | Restatement Adjustments and Reclassifications |  |  |  |  |  |  |  |  |  |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
(Loss) income before taxes |  |  |  |  |  |  |  | $ (125) |  |  | $ 125 | $ (286) | $ 300

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