CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY (unaudited) (Parenthetical) - $ / shares |
9 Months Ended | |
|---|---|---|
Sep. 30, 2018 |
Sep. 30, 2017 |
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| Increase (Decrease) in Stockholders' Equity [Roll Forward] | ||
| Cash dividend per share (in dollars per share) | $ 0.18 | $ 0.13 |
| Common Stock [Member] | ||
| Increase (Decrease) in Stockholders' Equity [Roll Forward] | ||
| Number of shares repurchased for taxes withheld on vested restricted stock (in shares) | 452 | 533 |
| Number of shares issued for stock option exercise (in shares) | 45,000 | 4,000 |
| X | ||||||||||
- Definition Represents the number of shares repurchased for taxes withheld on vested restricted stock. No definition available.
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| X | ||||||||||
- Definition Aggregate dividends paid during the period for each share of common stock outstanding. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. No definition available.
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| X | ||||||||||
- 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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| X | ||||||||||
- Details
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