Consolidated Statement of Stockholders' Equity (Unaudited) (Parentheticals) - $ / shares |
3 Months Ended | |
|---|---|---|
Mar. 31, 2019 |
Mar. 31, 2018 |
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| Common Stock [Member] | ||
| Issuance of common stock, shares (in shares) | 117,313 | 143,833 |
| Additional Paid-in Capital [Member] | ||
| Shares withholed in net settlement upon exercise of stock options (in shares) | 45,187 | 30,003 |
| Common dividends, per share declared (in dollars per share) | $ 0.15 | $ 0.11 |
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- Definition Aggregate dividends declared during the period for each share of common stock outstanding. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition Number of shares used to settle grantee's tax withholding obligation for award under share-based payment arrangement. No definition available.
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- Definition Number of share options (or share units) exercised during the current period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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