CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (Parenthetical) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2021	Mar. 31, 2020	Jun. 30, 2021	Jun. 30, 2020
Payments for common stock issuance costs	$ 4,300		$ 4,314	$ 0
Convertible Notes \| Convertible Senior Notes due 2024
Convertible notes conversion discount, taxes		$ 1,800
Issuance cost, equity component	1,100		1,100
Convertible Notes \| Convertible Senior Notes Due 2026
Convertible notes conversion discount, taxes		6,200		$ 4,400
Issuance cost, equity component	$ 900	$ 900	$ 900

The tax effect of an increase or decrease in contributed capital (for example, deductible expenditures reported as a reduction of the proceeds from issuing capital stock) during the period charged or credited directly to shareholders' equity.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 20
-Section 45
-Paragraph 11
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=123586238&loc=d3e39076-109324

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 740
-SubTopic 20
-Section 45
-Paragraph 2
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=123586238&loc=d3e38679-109324

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration