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Revenue from Contracts with Customers (Tables) | 9 Months Ended
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Sep. 30, 2018
Revenue from Contract with Customer [Abstract] |
Schedule of disaggregation of revenue | Revenue and cost of revenue (excluding depreciation and amortization) disaggregated by revenue source are as follows (in thousands):
| Three months ended September 30, |  | Nine months ended September 30,
| 2018 |  | 2017 |  | 2018 |  | 2017
Revenue: |  |  |  |  |  |  |
Products | $ | 69,671 |  |  | $ | 77,956 |  |  | $ | 186,552 |  |  | $ | 240,306 |
Services | 1,318 |  |  | 1,502 |  |  | 4,039 |  |  | 4,283 |
| $ | 70,989 |  |  | $ | 79,458 |  |  | $ | 190,591 |  |  | $ | 244,589 |
Cost of revenue (excluding depreciation and amortization): |  |  |  |  |  |  |
Products | $ | 52,647 |  |  | $ | 55,846 |  |  | $ | 142,670 |  |  | $ | 163,587 |
Services | 1,436 |  |  | 1,345 |  |  | 3,852 |  |  | 3,802 |
| $ | 54,083 |  |  | $ | 57,191 |  |  | $ | 146,522 |  |  | $ | 167,389 |

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- Definition Tabular disclosure of disaggregation of revenue into categories depicting how nature, amount, timing, and uncertainty of revenue and cash flows are affected by economic factor. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130545-203045 + Details
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