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Profit sharing payments.

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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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Amount of amortization expense attributable to debt issuance costs.

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The aggregate costs related to goods produced and sold and services rendered by an entity during the reporting period. This excludes costs incurred during the reporting period related to financial services rendered and other revenue generating activities.

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The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use.

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Related-Party Transactions - Additional Information (Details) - USD ($)	1 Months Ended	3 Months Ended		9 Months Ended
	Oct. 31, 2017	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Related Party Transaction [Line Items]
Service revenue		$ 4,706,378	$ 3,723,484	$ 13,775,796	$ 6,855,409
Accounts receivable		3,361,333		3,361,333		$ 6,356,268
Research and development		3,561,459	3,478,419	8,909,729	6,364,371
Collaborative Development Services
Related Party Transaction [Line Items]
Service revenue		3,391,534	2,130,694	8,704,094	2,433,105
SOW One
Related Party Transaction [Line Items]
Profit sharing payments included in collaborative development services revenue		0		99,394
Accounts receivable		0		0		2,429,152
Research and development		0	653,938	1,716,115	876,186
SOW One \| Collaborative Development Services
Related Party Transaction [Line Items]
Service revenue		0	846,368	2,397,136	1,123,779
SOW Two
Related Party Transaction [Line Items]
Profit sharing payments included in collaborative development services revenue		439,910		826,279
Accounts receivable		1,537,518		1,537,518		1,796,157
Research and development		1,667,303		2,431,445
Costs			0		0
Revenues			0		0
SOW Two \| Collaborative Development Services
Related Party Transaction [Line Items]
Service revenue		2,184,493		3,665,311
SOW Three
Related Party Transaction [Line Items]
Profit sharing payments included in collaborative development services revenue		209,140		355,631
Accounts receivable		994,157		994,157		0
Research and development		682,295		1,536,859
Costs			0		0
Revenues			0		0
SOW Three \| Collaborative Development Services
Related Party Transaction [Line Items]
Service revenue		1,207,041		$ 2,641,647
QIAGEN Manchester Limited
Related Party Transaction [Line Items]
Agreement commencement period				2016-11
QIAGEN Manchester Limited \| Maximum
Related Party Transaction [Line Items]
Term of Agreement				1 year
QIAGEN North American Holdings, Inc. \| Convertible Promissory Note
Related Party Transaction [Line Items]
Cash proceeds from issuance of subordinated notes	$ 3,000,000
Unamortized deferred financing costs		29,150		$ 29,150		$ 39,240
QIAGEN North American Holdings, Inc. \| Convertible Promissory Note \| Interest Expense
Related Party Transaction [Line Items]
Amortization of deferred financing costs		3,363	0	10,090	0
Interest accrued		$ 22,685	$ 0	$ 67,315	$ 0