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Number of securities into which the class of warrant or right may be converted. For example, but not limited to, 500,000 warrants may be converted into 1,000,000 shares.

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The number of shares issued in exchange for the original debt being converted in a noncash (or part noncash) transaction. "Part noncash" refers to that portion of the transaction not resulting in cash receipts or payments in the period.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Face (par) amount of the original debt instrument that was repurchased.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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Earnings Per Share - Dilutive Potential Common Shares (Details) - USD ($) $ in Thousands	1 Months Ended				3 Months Ended			9 Months Ended
	Jan. 31, 2021	Nov. 30, 2020	Aug. 31, 2020	Sep. 30, 2019	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2020	Sep. 30, 2022	Sep. 30, 2021	Aug. 24, 2022	Mar. 31, 2021	May 31, 2020	May 29, 2020	May 18, 2020	Mar. 31, 2018	Jul. 20, 2017	Apr. 04, 2017
Earnings Per Share
Number of dilutive potential common stock								164,474,496	148,932,611
Common stock shares issued		43,700,000	35,276,250
3.75% Convertible Senior Notes
Earnings Per Share
Principal amount					$ 197,278	$ 15,200		$ 197,278	$ 15,200			$ 212,500	$ 12,500	$ 200,000
Conversion of notes through common stock issuance					0	0		0	3,016,036
Interest rate (as a percent)					3.75%	3.75%		3.75%	3.75%		3.75%	3.75%	3.75%	3.75%
7.5% Convertible Senior Note
Earnings Per Share
Principal amount				$ 40,000
Conversion of notes through common stock issuance				16,000,000.0
Interest rate (as a percent)				7.50%
5.5% Convertible Senior Notes
Earnings Per Share
Principal amount	$ 200						$ 33,500								$ 100,000
Conversion of notes through common stock issuance	69,808						14,600,000
Repurchase amount												$ 66,300
Interest rate (as a percent)	5.50%						5.50%				5.50%	5.50%			5.50%
Restricted Stock
Earnings Per Share
Number of shares granted during period						1,159,856		1,476,152	1,812,856
2022 Amazon transaction agreement
Earnings Per Share
Shares of common stock that can be purchased from warrants issued (in shares)										16,000,000
Warrants Exercised During the Period								0
Warrants issued in July 2017
Earnings Per Share
Number of warrants exercised (in shares)								13,094,217	13,094,217
Warrants issued with the Amazon, Inc transaction agreement
Earnings Per Share
Shares of common stock that can be purchased from warrants issued (in shares)																	55,286,696
Number of warrants exercised (in shares)								17,461,994	17,461,994
Warrants issued with the Walmart Stores, Inc transaction agreement
Earnings Per Share
Shares of common stock that can be purchased from warrants issued (in shares)																55,286,696
Number of warrants exercised (in shares)					0	7,274,565		0	7,274,565
Stock options outstanding
Earnings Per Share
Number of dilutive potential common stock								25,549,257	24,784,288
Options granted					1,838,123	15,732,335		2,597,974	16,430,835
Restricted Stock
Earnings Per Share
Number of dilutive potential common stock								3,737,292	4,960,376
Restricted Stock Units (RSUs) [Member]
Earnings Per Share
Number of shares granted during period					54,000			399,512
Restricted Stock Awards (RSAs) [Member]
Earnings Per Share
Number of shares granted during period					295,661			1,076,640
Common stock warrants
Earnings Per Share
Number of dilutive potential common stock								96,017,181	80,017,181
Convertible senior notes
Earnings Per Share
Number of dilutive potential common stock								39,170,766	39,170,766