Consolidated Statements of Changes in Shareholders' Equity (Unaudited) (Parenthetical) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Increase (Decrease) in Stockholders' Equity
Other comprehensive income (loss), tax	$ (221)	$ 223
Cash dividends (in dollars per share)	$ 0.12	$ 0.12
Issuance of common stock - unvested shares (in shares)	6,404	3,984
Issuance of common stock - vested shares (in shares)	4,149	3,961
Repurchase of common stock (in shares)	440	368

Number of shares that have been repurchased during the period and have not been retired and are not held in treasury. Some state laws may govern the circumstances under which an entity may acquire its own stock and prescribe the accounting treatment therefore. This element is used when state law does not recognize treasury stock.

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