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Revenue Recognition (Narrative) (Details) - USD ($) | 3 Months Ended |  |
--- | --- | --- | ---
Mar. 31, 2018 | Jan. 01, 2018 | Dec. 31, 2017
Standard product warranty, term | 1 year |  |
Deferred commissions costs | $ 8,013,000 |  |
Customer Concentration Risk [Member] |  |  |
Significant customers that accounted for greater than 10% of our consolidated revenues | $ 0 |  |
Customer Concentration Risk [Member] | Sales Revenue, Net [Member] |  |  |
Concentration of credit risk | 0.00% |  |
Maximum [Member] |  |  |
Payment term | 60 days |  |
SaaS Subscription, Term of Contract | 2 years |  |
Amortization period | 7 years |  |
Minimum [Member] |  |  |
Payment term | 30 days |  |
Amortization period | 3 years |  |
Accounting Standards Update 2014-09 [Member] |  |  |
Deferred Revenue | $ 109,074,000 |  | $ 110,158,000
Deferred commissions costs | 12,400,000 | $ 11,800,000 |
Commissions expense recognized | $ 1,000,000 |  |
Extended Warranties and Post-Contract Support [Member] |  |  |
Post-contract support contract, term | 12 months |  |
Extended Warranties and Post-Contract Support [Member] | Maximum [Member] |  |  |
Extended product warranty, term | 5 years |  |
Extended Warranties and Post-Contract Support [Member] | Minimum [Member] |  |  |
Extended product warranty, term | 1 year |  |
Extended Warranties and Post-Contract Support [Member] | Accounting Standards Update 2014-09 [Member] |  |  |
Deferred Revenue | $ 41,300,000 | 40,300,000 |
Deferred Revenue, Revenue Recognized | $ 11,800,000 |  |
Deferred Revenue, Term | 1 year |  |
Deferred Revenue, With an Original Duration of More than One Year | $ 28,800,000 |  |
Deferred Revenue, Expected Recognition within Remainder of Year, Percentage | 20.00% |  |
Deferred Revenue, Expected Recognition During Year Two, Percentage | 28.00% |  |
Deferred Revenue, Expected Recognition During Year Three, Percentage | 22.00% |  |
Up-Front Customer Loyalty Programs [Member] |  |  |
Capitalized customer acquisition costs | $ 113,800,000 | 107,500,000 |
Recognized as a reduction of revenue | 7,200,000 |  |
Volume Commitment Programs [Member] |  |  |
Contract with Customer, Asset, Net | 12,300,000 | 5,600,000 |
Contract with Customer, Asset, Reclassified to Receivable | 1,300,000 |  |
Up-Front Customer Loyalty Programs And Volume Commitment Programs [Member] |  |  |
Deferred Revenue | $ 878,500,000 |  |
Deferred Revenue, Expected Recognition within Remainder of Year, Percentage | 23.00% |  |
Deferred Revenue, Expected Recognition During Year Two, Percentage | 24.00% |  |
Deferred Revenue, Expected Recognition During Year Three, Percentage | 19.00% |  |
Instrument Rebate Programs [Member] |  |  |
Deferred Revenue | $ 63,700,000 | $ 65,900,000 |
Deferred Revenue, Revenue Recognized | $ 4,600,000 |  |
Deferred Revenue, Expected Recognition within Remainder of Year, Percentage | 22.00% |  |
Deferred Revenue, Expected Recognition During Year Two, Percentage | 26.00% |  |
Deferred Revenue, Expected Recognition During Year Three, Percentage | 21.00% |  |
Reagent Rental Programs [Member] |  |  |
Deferred Revenue | $ 115,900,000 |  |
Deferred Revenue, Expected Recognition within Remainder of Year, Percentage | 24.00% |  |
Deferred Revenue, Expected Recognition During Year Two, Percentage | 28.00% |  |
Deferred Revenue, Expected Recognition During Year Three, Percentage | 22.00% |  |

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