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v3.19.1

Restatement of Previously Issued Consolidated Financial Statements - Narrative (Details) $ in Thousands | 3 Months Ended | 6 Months Ended | 9 Months Ended | 12 Months Ended
--- | --- | --- | --- | ---
Dec. 31, 2017 USD ($) board_member | Sep. 30, 2017 USD ($) | Jun. 30, 2017 USD ($) | Mar. 31, 2017 USD ($) | Dec. 31, 2016 USD ($) | Sep. 30, 2016 USD ($) | Jun. 30, 2016 USD ($) | Mar. 31, 2016 USD ($) | Jun. 30, 2017 USD ($) | Jun. 30, 2016 USD ($) | Sep. 30, 2017 USD ($) | Sep. 30, 2016 USD ($) | Dec. 31, 2017 USD ($) board_member | Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($) board_member | Dec. 31, 2014 USD ($) | Dec. 31, 2013 USD ($)
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reduction to stockholders' equity balances | $ (32,172) | $ (6,129) | $ (18,210) | $ (30,048) | $ (40,660) | $ (46,967) | $ (55,337) | $ (81,900) | $ (18,210) | $ (55,337) | $ (6,129) | $ (46,967) | $ (32,172) | $ (40,660) | $ (84,873) | $ (86,483) | $ (47,607)
Net (loss) income | (6,130) | (9,202) | (7,747) | (24,533) | (6,640) | (8,717) | (28,792) | (3,323) | (32,280) | (32,115) | (41,482) | (40,832) | (47,612) | (47,472) | (2,891) | 21,477 |
Net sales | 131,476 | 99,953 | 100,922 | 84,265 | 98,280 | 78,944 | 85,771 | 76,470 |  |  |  |  | 416,616 | 339,465 | 362,387 | 347,580 |
(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 |
Impairment losses |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 0 | (11,633) | 0 |
Asset impairment charges | 1 | 0 | 0 | 0 | 167 | 38 | 1,064 | 345 |  |  |  |  | 1 | 1,614 | 11,686 | 310 |
Goodwill | $ 29,835 | $ 29,835 | $ 29,835 | $ 29,835 | $ 29,835 | $ 29,835 | $ 29,835 | 29,835 | $ 29,835 | $ 29,835 | $ 29,835 | $ 29,835 | $ 29,835 | $ 29,835 | $ 29,835 | 23,414 | 0
Ownership interest of nonconsolidated subsidiary |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 9.00% |  |
Number of board member positions held | board_member |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 2 |  |
Number of board members | board_member | 3 |  |  |  |  |  |  |  |  |  |  |  | 3 |  | 5 |  |
Restatement Adjustment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reduction to stockholders' equity balances |  |  |  |  |  |  |  | 19,467 |  |  |  |  |  |  | $ 21,424 | 4,316 | 2,891
Net (loss) income |  |  |  |  |  |  |  | 1,928 |  |  |  |  |  |  | (17,169) | (2,249) |
Net sales |  |  |  |  |  |  |  | 14,656 |  |  |  |  |  |  | (27,059) | (415) |
(Loss) income before taxes |  |  |  |  |  |  |  | 2,251 |  |  |  |  |  |  | (26,483) | (5,318) |
Cost of sales |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 6,500 | 7,900 |
Asset impairment charges |  |  |  |  |  |  |  | 345 |  |  |  |  |  |  | 11,686 | 310 |
Goodwill |  |  |  |  |  |  |  | (11,631) |  |  |  |  |  |  | (11,631) | (132) |
Revenue recognition adjustments | Restatement Adjustment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  | 14,656 |  |  |  |  |  |  | (27,059) | (415) |
(Loss) income before taxes |  |  |  |  |  |  |  | 3,111 |  |  |  |  |  |  | (9,215) | (2,700) |
Gross basis | Restatement Adjustment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 6,500 | 7,900 |
Product development cost | Restatement Adjustment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  | 0 |  |
(Loss) income before taxes |  |  |  |  |  |  |  | 123 |  |  |  |  |  |  | (1,001) | (2,397) | (3,600)
Inventory valuation | Restatement Adjustment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  | 0 |  |
(Loss) income before taxes |  |  |  |  |  |  |  | (404) |  |  |  |  |  |  | (1,069) | 38 | $ (1,500)
Impairment of long-lived assets | Restatement Adjustment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  | 0 |  |
(Loss) income before taxes |  |  |  |  |  |  |  | (557) |  |  |  |  |  |  | (11,733) | (310) |
Asset impairment charges |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 100 | 300 |
Product warranty | Restatement Adjustment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  | 0 |  |  |  |  |  |  | 0 |  |
(Loss) income before taxes |  |  |  |  |  |  |  | $ (319) |  |  |  |  |  |  | (2,484) | 591 |
Purchase accounting | Restatement Adjustment |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Error Corrections and Prior Period Adjustments Restatement [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 0 | 0 |
(Loss) income before taxes |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 0 | (845) |
Increase in long-lived assets |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 700 |
Goodwill |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 700 |

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