Deferred revenue related party.

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- Definition

Amount due from customers or clients, within one year of the balance sheet date (or the normal operating cycle, whichever is longer), for goods or services (including trade receivables) that have been delivered or sold in the normal course of business, reduced to the estimated net realizable fair value by an allowance established by the entity of the amount it deems uncertain of collection.

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- Definition

The carrying amount of consideration received or receivable as of the balance sheet date on potential earnings that were not recognized as revenue in conformity with GAAP, and which are expected to be recognized as such within one year or the normal operating cycle, if longer, including sales, license fees, and royalties, but excluding interest income.

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- References

No definition available.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Amount of noncurrent assets classified as other.

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- Definition

Amount of asset related to consideration paid in advance for costs that provide economic benefits in future periods, and amount of other assets that are expected to be realized or consumed within one year or the normal operating cycle, if longer.

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- Definition

The cumulative amount of the reporting entity's undistributed earnings or deficit.

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- Definition

Amount of revenue, fees and commissions earned from transactions between (a) a parent company and its subsidiaries; (b) subsidiaries of a common parent; (c) an entity and trusts for the benefit of employees, for example, but not limited to, pension and profit-sharing trusts that are managed by or under the trusteeship of the entity's management; (d) an entity and its principal, owners, management, or members of their immediate families; and (e) affiliates.

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- Definition

Amount before allowances and discounts of service revenue classified as other.

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- References

No definition available.

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Summary of Significant Accounting Policies - Schedule of Impact of Adoption on Condensed Consolidated Statement of Operations and Condensed Consolidated Balance Sheet (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017	Jan. 01, 2018	Dec. 31, 2017
Assets
Accounts receivable	$ 32,222			$ 19,967
Prepaid expenses and other current assets	13,003			9,118
Other assets	2,225			1,760
Liabilities:
Deferred revenue	2,867			2,212
Roche related-party deferred revenue	4,801			3,742
Stockholders’ equity:
Accumulated deficit	(525,472)			$ (506,349)
ASU 2014-09 [Member]
Assets
Accounts receivable			$ 37,210
Prepaid expenses and other current assets			9,828
Other assets			2,333
Liabilities:
Deferred revenue			2,368
Roche related-party deferred revenue			3,820
Stockholders’ equity:
Accumulated deficit			(488,057)
Molecular Information Services [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Revenue	31,943	$ 15,594
Pharma Research and Development Services [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Revenue	4,782	1,087
Effect of Change Higher/(Lower) \| ASU 2014-09 [Member]
Assets
Accounts receivable	(14,008)		17,243
Prepaid expenses and other current assets	(4,771)		710
Other assets	(491)		573
Liabilities:
Deferred revenue	(179)		156
Roche related-party deferred revenue	286		78
Stockholders’ equity:
Accumulated deficit	(19,377)		$ 18,292
Effect of Change Higher/(Lower) \| Molecular Information Services [Member] \| ASU 2014-09 [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Revenue	3,212
Effect of Change Higher/(Lower) \| Pharma Research and Development Services [Member] \| ASU 2014-09 [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Revenue	(3,923)
Balances Without Adoption of ASC 606 \| ASU 2014-09 [Member]
Assets
Accounts receivable	18,214
Prepaid expenses and other current assets	8,232
Other assets	1,734
Liabilities:
Deferred revenue	2,688
Roche related-party deferred revenue	5,087
Stockholders’ equity:
Accumulated deficit	(544,849)
Balances Without Adoption of ASC 606 \| Molecular Information Services [Member] \| ASU 2014-09 [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Revenue	35,155
Balances Without Adoption of ASC 606 \| Pharma Research and Development Services [Member] \| ASU 2014-09 [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Revenue	859
Roche [Member] \| Molecular Information Services [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Related-party revenue	14,648	5,504
Roche [Member] \| Pharma Research and Development Services [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Related-party revenue	1,467	$ 4,143
Roche [Member] \| Effect of Change Higher/(Lower) \| Molecular Information Services [Member] \| ASU 2014-09 [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Related-party revenue	(374)
Roche [Member] \| Balances Without Adoption of ASC 606 \| Molecular Information Services [Member] \| ASU 2014-09 [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Related-party revenue	14,274
Roche [Member] \| Balances Without Adoption of ASC 606 \| Pharma Research and Development Services [Member] \| ASU 2014-09 [Member]
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Related-party revenue	$ 1,467