Short-Term Borrowings and Long-Term Debt - Schedule of Long-term Debt Instruments (Details) - USD ($) $ in Thousands	6 Months Ended
Jun. 30, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Borrowing Limit	$ 1,532,499
Total principal long-term debt	476,741	$ 424,875
Current portion of long-term debt	(470,404)	(67,576)
Less: unamortized discounts	(2,205)	(3,957)
Total	4,132	353,342
Line of credit
Debt Instrument [Line Items]
Borrowing Limit	176,416
Line of credit \| February 27, 2024
Debt Instrument [Line Items]
Borrowing Limit	1,000,000
Total principal long-term debt	$ 0	0
Line of credit \| February 27, 2024 \| Federal funds rate or composite overnight bank borrowings rate
Debt Instrument [Line Items]
Variable interest rate	0.50%
Line of credit \| February 27, 2024 \| Adjusted LIBOR
Debt Instrument [Line Items]
Variable interest rate	1.00%
Line of credit \| February 27, 2024 \| LIBOR
Debt Instrument [Line Items]
Variable interest rate	1.00%
Line of credit \| November 28, 2021
Debt Instrument [Line Items]
Interest rate (%)	5.20%
Borrowing Limit	$ 8,402
Total principal long-term debt	8,402	19,199
Restricted cash, held as guarantee	3,000
Line of credit \| December 23, 2021 - April 4, 2022
Debt Instrument [Line Items]
Borrowing Limit	478,762
Total principal long-term debt	433,982	354,963
Restricted cash, held as guarantee	7,000
Pledged assets	$ 345,000
Line of credit \| December 23, 2021 - April 4, 2022 \| Minimum
Debt Instrument [Line Items]
Interest rate (%)	3.50%
Line of credit \| December 23, 2021 - April 4, 2022 \| Maximum
Debt Instrument [Line Items]
Interest rate (%)	8.50%
Loans payable \| July 21, 2021 - March 26, 2023
Debt Instrument [Line Items]
Borrowing Limit	$ 45,335
Total principal long-term debt	$ 34,357	$ 50,713
Loans payable \| July 21, 2021 - March 26, 2023 \| Minimum
Debt Instrument [Line Items]
Interest rate (%)	3.10%
Loans payable \| July 21, 2021 - March 26, 2023 \| Maximum
Debt Instrument [Line Items]
Interest rate (%)	5.10%

Percentage points added to the reference rate to compute the variable rate on the debt instrument.

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Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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Face (par) amount of debt instrument at time of issuance.

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

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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, after accumulated amortization, of debt discount.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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Amount, after unamortized (discount) premium and debt issuance costs, of long-term debt, classified as current. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations.

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The carrying amount, as of the date of the latest financial statement presented, of all assets that are pledged as collateral for the payment of the related debt obligation primarily arising from secured borrowings, repurchase agreements or other current or potential obligations, where the secured party does not have the right by contract or custom to sell or re-pledge the collateral and therefore are not reclassified and separately reported in the statement of financial position.

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The current cash, cash equivalents and investments that are restricted as to withdrawal or usage. Restrictions may include legally restricted deposits held as compensating balances against short-term borrowing arrangements, contracts entered into with others, or entity statements of intention with regard to particular deposits; however, time deposits and short-term certificates of deposit are not generally included in legally restricted deposits. Excludes compensating balance arrangements that are not agreements which legally restrict the use of cash amounts shown on the balance sheet. Includes current cash equivalents and investments that are similarly restricted as to withdrawal, usage or disposal.

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