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Long-Term Debt (Long-Term Debt) (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Gross long-term debt	$ 396,209
Less: unamortized debt issuance costs	(10,322)	$ (4,428)
Total long-term debt	385,887	233,462
Subordinated Notes [Member] | Subordinated Notes Payable, Maturing June 2045 [Member]
Debt Instrument [Line Items]
Gross long-term debt	150,000	150,000
Less: unamortized debt issuance costs	(4,296)
Subordinated Notes [Member] | Subordinated Notes Payable, Maturing June 2060 [Member]
Debt Instrument [Line Items]
Gross long-term debt	172,500
Less: unamortized debt issuance costs	(6,026)
Other Long-Term Debt [Member]
Debt Instrument [Line Items]
Gross long-term debt	$ 73,709	$ 87,890

X

- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 470
-SubTopic 20
-Section 50
-Paragraph 4
-Subparagraph (b)(1)
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Amount, after accumulated amortization, of debt issuance costs. Includes, but is not limited to, legal, accounting, underwriting, printing, and registration costs.

+ References

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Name Accounting Standards Codification
-Topic 470
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