Fair Value of Financial Instruments - Narrative (Details) - USD ($)	6 Months Ended
Jun. 30, 2020	Jun. 30, 2019
Fair Value Disclosures [Abstract]
Fair value security, level 1 to level 2 transfers, amount	$ 0	$ 0
Fair Value security, level 1 to level 3 transfers, amount	$ 0	$ 0

Amount of transfers of financial instruments classified in shareholders' equity measured on a recurring basis out of level 1 of the fair value hierarchy into level 2.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bb)
-URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258

Name:	us-gaap_FairValueEquityLevel1ToLevel2TransfersAmount
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant