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Nature of Business, Basis of Presentation and Significant Accounting Policies - Textual (Details) $ in Thousands | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 30, 2018 USD ($) | Jul. 01, 2017 USD ($) | Jun. 30, 2018 USD ($) Agreement | Jul. 01, 2017 USD ($) | Mar. 31, 2018 USD ($) | Dec. 30, 2017 USD ($)
Accounting Policies [Line Items] |  |  |  |  |  |
Fiscal year/fiscal quarter duration |  |  | 91 days | 91 days |  |
Peformance obligation payment terms |  |  | The timing of satisfaction of the performance obligation to payment is dependent upon the negotiated payment terms but generally occurs within 30 to 60 days. |  |  |
Maximum period of delivery to customers |  |  | 6 months |  |  |
Maximum period services are provided over the fixed arrangement term |  |  | 12 months |  |  |
Revenue recognized | $ 88,604 | $ 64,427 | $ 170,917 | $ 123,741 |  |
Contract assets balance |  |  |  |  | $ 4,400 | $ 4,300
Accounts Receivable [Member] |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |
Contract assets balance | 4,500 |  | $ 4,500 |  |  |
Accounting Standards Update 2014-09 [Member] |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |
Revenue recognized | $ 3,300 |  |  |  |  |
Minimum [Member] |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |
Fiscal year/fiscal quarter duration |  |  | 364 days |  |  |
Number of peformance obligations | Agreement |  |  | 1 |  |  |
Maximum [Member] |  |  |  |  |  |
Accounting Policies [Line Items] |  |  |  |  |  |
Fiscal year/fiscal quarter duration |  |  | 371 days |  |  |

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- Definition Amount, before allowance for credit loss, of right to consideration in exchange for good or service transferred to customer, when right is conditioned on something other than passage of time. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=82913815&loc=SL49130531-203044 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130549-203045 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=82913815&loc=SL49130533-203044 + Details
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