Accounts receivable and unbilled, related parties, current.

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Contract with customer, liability, current with related parties.

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Lease expiration month and year.

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Lease expiration year.

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- Definition

Lease occupancy year.

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Number of buildings.

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Number of lease agreements.

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Number of lease renewal options.

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- Definition

For an unclassified balance sheet, amounts due from an Entity employee, not to include stockholders or officers.

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- Definition

Term of lessee's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Amount of single lease cost, calculated by allocation of remaining cost of lease over remaining lease term. Includes, but is not limited to, single lease cost, after impairment of right-of-use asset, calculated by amortization of remaining right-of-use asset and accretion of lease liability.

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Present value of lessee's discounted obligation for lease payments from operating lease, classified as current.

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Present value of lessee's discounted obligation for lease payments from operating lease, classified as noncurrent.

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Amount of lessee's right to use underlying asset under operating lease.

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- Definition

Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party.

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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.

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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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Expenses incurred for travel and entertainment during the period.

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Related Party Transactions - Additional Information (Details) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2020 USD ($)	Jun. 30, 2019 USD ($)	Jun. 30, 2020 USD ($) RenewalOption Agreement Building	Jun. 30, 2019 USD ($)	Dec. 31, 2018 RenewalOption Agreement	Dec. 31, 2019 USD ($)
Related Party Transaction [Line Items]
Advanced billings	$ 1,600		$ 1,600			$ 3,000
Accounts receivable and unbilled, net	2,500		2,500			1,900
Operating lease cost	4,871	$ 3,220	8,639	$ 6,337
Operating lease right-of-use assets	113,566		113,566			52,152
Current portion of lease liability	13,950		13,950			10,977
Long-term portion of lease liabilities	114,984		114,984			45,212
Employee Loans \| Prepaid Expenses and Other Current Assets and Other Assets
Related Party Transaction [Line Items]
Employee advances receivables	200		200			200
Service Agreements \| Cymabay
Related Party Transaction [Line Items]
Advanced billings						1,600
Accounts receivable and unbilled, net						1,400
Service Agreements \| Cymabay \| Revenue Net
Related Party Transaction [Line Items]
Revenue with related parties		2,800		5,900
Service Agreements \| LIB
Related Party Transaction [Line Items]
Advanced billings	800		800			500
Accounts receivable and unbilled, net	1,100		1,100			300
Service Agreements \| LIB \| Revenue Net
Related Party Transaction [Line Items]
Revenue with related parties	400	300	1,400	1,000
Service Agreements \| CinRx Pharma and Subsidiaries
Related Party Transaction [Line Items]
Advanced billings	800		800			900
Accounts receivable and unbilled, net	1,300		1,300			200
Service Agreements \| CinRx Pharma and Subsidiaries \| Revenue Net
Related Party Transaction [Line Items]
Revenue with related parties	2,400	900	6,800	2,300
Service Agreements \| The Summit
Related Party Transaction [Line Items]
Expenses incurred			$ 200	300
Service Agreements \| The Summit \| Maximum
Related Party Transaction [Line Items]
Expenses incurred	$ 100	200
Leased Real Estate \| Chief Executive Officer
Related Party Transaction [Line Items]
Term of lease	12 years		12 years
Lease expiration period			2022-11
Number of lease renewal, 10-year option \| RenewalOption			1
Lease term upon renewal	10 years		10 years
Leased Real Estate \| Chief Executive Officer \| Direct Costs and Selling, General And Administrative
Related Party Transaction [Line Items]
Operating lease cost	$ 500	500	$ 1,000	1,000
Leased Real Estate \| Chief Executive Officer And Immediate Family \| Office Space
Related Party Transaction [Line Items]
Number of lease renewal, 10-year option \| RenewalOption					2
Lease term upon renewal					10 years
Lease expiration year					2040
Number of lease agreements \| Agreement					1
Leased Real Estate \| Chief Executive Officer And Immediate Family \| Building
Related Party Transaction [Line Items]
Number of lease renewal, 10-year option \| RenewalOption			1
Lease term upon renewal	10 years		10 years
Lease expiration year			2027
Number of lease agreements \| Agreement			2
Number of buildings \| Building			2
Lease occupancy year			2012
Leased Real Estate \| Chief Executive Officer And Immediate Family \| Direct Costs and Selling, General And Administrative \| Office Space
Related Party Transaction [Line Items]
Operating lease cost	$ 900		$ 900
Leased Real Estate \| Chief Executive Officer And Immediate Family \| Direct Costs and Selling, General And Administrative \| Building
Related Party Transaction [Line Items]
Operating lease cost	900	900	1,800	1,800
Leased Real Estate \| Operating Lease Right-of-Use Assets \| Chief Executive Officer
Related Party Transaction [Line Items]
Operating lease right-of-use assets	4,400		4,400			5,300
Leased Real Estate \| Operating Lease Right-of-Use Assets \| Chief Executive Officer And Immediate Family \| Office Space
Related Party Transaction [Line Items]
Operating lease right-of-use assets	54,200		54,200
Leased Real Estate \| Operating Lease Right-of-Use Assets \| Chief Executive Officer And Immediate Family \| Building
Related Party Transaction [Line Items]
Operating lease right-of-use assets	20,800		20,800			21,900
Leased Real Estate \| Other Current Liabilities \| Chief Executive Officer
Related Party Transaction [Line Items]
Current portion of lease liability	1,800		1,800			1,800
Leased Real Estate \| Other Current Liabilities \| Chief Executive Officer And Immediate Family \| Office Space
Related Party Transaction [Line Items]
Current portion of lease liability	800		800
Leased Real Estate \| Other Current Liabilities \| Chief Executive Officer And Immediate Family \| Building
Related Party Transaction [Line Items]
Current portion of lease liability	2,400		2,400			2,300
Leased Real Estate \| Operating Lease Liabilities \| Chief Executive Officer
Related Party Transaction [Line Items]
Long-term portion of lease liabilities	2,600		2,600			3,500
Leased Real Estate \| Operating Lease Liabilities \| Chief Executive Officer And Immediate Family \| Office Space
Related Party Transaction [Line Items]
Long-term portion of lease liabilities	63,700		63,700
Leased Real Estate \| Operating Lease Liabilities \| Chief Executive Officer And Immediate Family \| Building
Related Party Transaction [Line Items]
Long-term portion of lease liabilities	18,500		18,500			$ 19,700
Travel Services \| Chief Executive Officer
Related Party Transaction [Line Items]
Travel expenses with related party	$ 200	$ 300	$ 400	$ 600