Consolidated Statement of Stockholders' Equity (Unaudited) (Parentheticals) - $ / shares |
3 Months Ended | |
|---|---|---|
Mar. 31, 2018 |
Mar. 31, 2017 |
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| Dividend Declared [Member] | ||
| Common dividends, per share declared (in dollars per share) | $ 0.11 | $ 0.05 |
| Additional Paid-in Capital [Member] | ||
| Issuance of common stock, shares (in shares) | 173,836 | 175,500 |
| Shares withheld in net settlement upon exercise of stock options, shares (in shares) | 30,003 | |
| Noncontrolling Interest [Member] | ||
| Issuance of REIT preferred stock, shares (in shares) | 125 | |
| X | ||||||||||
- Definition Number of preferred shares issued during the period. No definition available.
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| X | ||||||||||
- 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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| X | ||||||||||
- Definition For net-share settlement of share-based awards when the employer settles employees' income tax withholding obligations, this element represents the number of shares the employees use to repay the employer. No definition available.
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| X | ||||||||||
- Definition Number of new stock issued during the period. Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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| X | ||||||||||
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