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Schedule 1 - Condensed Financial Information of Registrant - Condensed Statements of Cash Flows, Parent Company (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Cash Flows from Operating Activities |  |  |
Net Cash Provided by Operating Activities | $ 185,037 | $ 143,448 | $ 173,577
Cash Flows from Investing Activities |  |  |
Investment in Subsidiaries | (10,626) | (4,372) | (4,168)
Net Cash (Used in) Provided by Investing Activities | (209,472) | (107,419) | (132,590)
Cash Flows from Financing Activities |  |  |
Change in Checks Written in Excess of Cash | (2,814) | (345) | 2,434
Net Short-Term (Repayments) Borrowings | (12,599) | (93,772) | 69,488
Proceeds from Issuance of Common Stock | 20,338 | 0 | 4,349
Common Stock Issuance Expenses | (577) | (108) | 0
Payments for Retirement of Capital Stock | (2,730) | (3,011) | (1,799)
Short-Term and Long-Term Debt Issuance Expenses | (950) | (761) | (380)
Payments for Retirement of Long-Term Debt | (172) | (189) | (48,231)
Dividends Paid | (55,723) | (53,198) | (50,632)
Net Cash Used in Financing Activities | 44,773 | (51,384) | (24,771)
Net Change in Cash and Cash Equivalents | 20,338 | (15,355) | 16,216
Cash and Cash Equivalents at Beginning of Period | 861 | 16,216 | 0
Cash and Cash Equivalents at End of Period | 21,199 | 861 | 16,216
Parent Company [Member] |  |  |
Cash Flows from Operating Activities |  |  |
Net Cash Provided by Operating Activities | 52,263 | 56,947 | 50,205
Cash Flows from Investing Activities |  |  |
Investment in Subsidiaries | (34,990) | (24,764) | 0
Debt Repaid by Subsidiaries | 1,338 | 774 | 151
Cash Used in Investing Activities | (257) | (623) | (121)
Net Cash (Used in) Provided by Investing Activities | (33,909) | (24,613) | 30
Cash Flows from Financing Activities |  |  |
Change in Checks Written in Excess of Cash | (31) | 31 | 0
Net Short-Term (Repayments) Borrowings | (3,215) | 9,215 | 0
Borrowings from (Repayments to) Subsidiaries | 28,985 | (1,281) | 23,389
Proceeds from Issuance of Common Stock | 20,338 | 0 | 4,349
Common Stock Issuance Expenses | (577) | (108) | 0
Payments for Retirement of Capital Stock | (2,730) | (3,011) | (1,799)
Short-Term and Long-Term Debt Issuance Expenses | (270) | (164) | (158)
Payments for Retirement of Long-Term Debt | (172) | (189) | (15,231)
Dividends Paid | (55,723) | (53,198) | (50,632)
Net Cash Used in Financing Activities | (13,395) | (48,705) | (40,082)
Net Change in Cash and Cash Equivalents | 4,959 | (16,371) | 10,153
Cash and Cash Equivalents at Beginning of Period | 0 | 16,371 | 6,218
Cash and Cash Equivalents at End of Period | $ 4,959 | $ 0 | $ 16,371

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