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v3.8.0.1

Subsequent Events (Details) |  | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | --- | ---
Nov. 03, 2017 USD ($) | Dec. 31, 2017 USD ($) | Sep. 30, 2017 USD ($) | Sep. 30, 2016 USD ($) | Oct. 16, 2017 USD ($) installment | Mar. 31, 2016 USD ($)
Subsequent Event [Line Items] |  |  |  |  |  |
Repayment of long-term debt |  |  | $ 0 | $ 5,000,000 |  |
Thyroid Cytopathology Partners | Subsequent Event |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Contract termination fee |  |  |  |  | $ 1,750,000 |
Payment installments for contract termination Fee | installment |  |  |  |  | 8 |
Visium | Line of Credit |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Maximum borrowing capacity |  |  |  |  |  | $ 40,000,000.0
Interest rate (as a percent) |  |  | 12.00% |  |  |
Visium | Line of Credit | Subsequent Event |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Repayment of long-term debt | $ 27,300,000 |  |  |  |  |
Silicon Valley Bank | Line of Credit | Subsequent Event |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Maximum borrowing capacity | 35,000,000.0 |  |  |  |  |
Secured Debt | Silicon Valley Bank | Line of Credit | Subsequent Event |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Maximum borrowing capacity | 25,000,000.0 |  |  |  |  |
Balloon payment to be paid | 1,200,000.0 |  |  |  |  |
Revolving Credit Facility | Silicon Valley Bank | Line of Credit | Subsequent Event |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Maximum borrowing capacity | $ 10,000,000.0 |  |  |  |  |
London Interbank Offered Rate (LIBOR) | Secured Debt | Silicon Valley Bank | Line of Credit | Subsequent Event |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Basis spread on variable rate | 4.20% |  |  |  |  |
London Interbank Offered Rate (LIBOR) | Revolving Credit Facility | Silicon Valley Bank | Line of Credit | Subsequent Event |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Basis spread on variable rate | 3.50% |  |  |  |  |
Minimum [Member] | London Interbank Offered Rate (LIBOR) | Secured Debt | Silicon Valley Bank | Line of Credit | Subsequent Event |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Interest rate (as a percent) | 5.43% |  |  |  |  |
Minimum [Member] | London Interbank Offered Rate (LIBOR) | Revolving Credit Facility | Silicon Valley Bank | Line of Credit | Subsequent Event |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Interest rate (as a percent) | 4.70% |  |  |  |  |
Scenario, Forecast | Visium |  |  |  |  |  |
Subsequent Event [Line Items] |  |  |  |  |  |
Payments of debt extinguishment costs |  | $ 1,900,000 |  |  |  |

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