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Consolidated Statements of Changes in Shareholders’ Equity (Unaudited) (Parenthetical) - USD ($) $ in Thousands | 6 Months Ended
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Jun. 30, 2018 | Jun. 30, 2017
Statement of Stockholders' Equity [Abstract] |  |
Cash dividends per share (in usd per share) | $ 0.25 | $ 0.20
Stock-based compensation plans, issuance of stock (in shares) | 75,623 | 4,808
Issuance of stock, common stock forfeited (in shares) | 0 | 0
Compensation expense, issuance of stock | $ 924 | $ 666
Issuance of treasury stock (in shares) | 0 | 53,367
Acquisition of treasury stock (in shares) | 21,965 | 0

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