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Shareholders' Equity | 12 Months Ended
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Dec. 31, 2018
Stockholders' Equity Note [Abstract] |
Shareholders' Equity | Shareholders’ Equity Dividends. The following summarizes the dividend activity for the year ended December 31, 2018:
Declared |  | Regular Cash Dividends Per Common Share |  | Special Cash Dividends Per Common Share |  | Record Date |  | Paid Date
January 25, 2018 |  | $ | 0.22 |  |  | $ | — |  |  | February 7, 2018 |  | February 21, 2018
April 25, 2018 |  | $ | 0.26 |  |  | $ | — |  |  | May 9, 2018 |  | May 23, 2018
July 25, 2018 |  | $ | 0.26 |  |  | $ | — |  |  | August 8, 2018 |  | August 22, 2018
October 25, 2018 |  | $ | 0.26 |  |  | $ | 0.14 |  |  | November 7, 2018 |  | November 21, 2018
Subsequent to year end, on January 24, 2019, the Company declared a regular quarterly cash dividend of $0.28 per share and a special cash dividend of $0.14 per share payable on February 20, 2019, to shareholders of record at the close of business on February 6, 2019. The payment of cash dividends is subject to federal regulatory requirements for capital levels and other restrictions. In addition, the cash dividends paid by Columbia Bank to the Company are subject to both federal and state regulatory requirements.

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- Definition The entire disclosure for shareholders' equity comprised of portions attributable to the parent entity and noncontrolling interest, including other comprehensive income. Includes, but is not limited to, balances of common stock, preferred stock, additional paid-in capital, other capital and retained earnings, accumulated balance for each classification of other comprehensive income and amount of comprehensive income. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -URI http://asc.fasb.org/topic&trid=2208762 + Details
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