Description of Business and Accounting Policies - Narrative (Details) $ in Millions	3 Months Ended
Mar. 31, 2021 USD ($) Customer	Mar. 31, 2020	Dec. 31, 2020 USD ($) Customer
Description of Business and Accounting Policies [Line Items]
Number of customers, exceeds 10% of total accounts receivable \| Customer	1		1
Revenue derived from foreign operations	6.00%	5.00%
Restructuring liabilities included in other current liabilities \| $	$ 2.5		$ 4.5
Verizon Communications Inc. [Member]
Description of Business and Accounting Policies [Line Items]
Accounts receivable from one customer greater than 10%, percentage	16.00%		20.00%

Carrying amount as of the balance sheet date of known and estimated obligations associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, which are expected to be paid in the next twelve months or in the normal operating cycle if longer. Costs of such activities include those for one-time termination benefits, termination of an operating lease or other contract, consolidating or closing facilities, relocating employees, and costs associated with an ongoing benefit arrangement, but excludes costs associated with the retirement of a long-lived asset.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 420
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SAB Topic 5.P.4(b)(2))
-URI http://asc.fasb.org/extlink&oid=115931487&loc=d3e140904-122747

Name:	us-gaap_RestructuringReserveCurrent
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant