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No definition available.

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The amount of net income or loss for the period per each share in instances when basic and diluted earnings per share are the same amount and reported as a single line item on the face of the financial statements. Basic earnings per share is the amount of net income or loss for the period per each share of common stock or unit outstanding during the reporting period. Diluted earnings per share includes the amount of net income or loss for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

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- Definition

This element represents nonvested share-based payment awards that contain non-forfeitable rights to dividends or dividend equivalents (whether paid or unpaid). Basic and dilutive earnings per share are generally disclosed for such shares using the two-class method.

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- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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Amount, after deduction of tax, noncontrolling interests, dividends on preferred stock and participating securities; of income (loss) available to common shareholders.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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No definition available.

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Amount of undistributed earnings (loss) allocated to participating securities for the basic earnings (loss) per share or per unit calculation under the two-class method.

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Average number of shares or units issued and outstanding that are used in calculating basic and diluted earnings per share (EPS).

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No definition available.

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Equity and EPS - Computations of Earnings (Loss) Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Operations:
Net income	$ 12,947	$ 8,215	$ 7,911	$ 9,720	$ 11,822	$ 9,008	$ 7,527	$ 8,927	$ 38,793	$ 37,284	$ 41,823
Less: Income attributable to participating securities (unvested shares and units)									253	708	996
Net income attributable to common shareholders and used in Earnings Per Share calculation									$ 38,540	$ 36,576	$ 40,827
Share information:
Basic and diluted weighted average common shares (in shares)									17,012,288	16,866,176	16,746,731
Basic and diluted EPS (in dollars per share)	$ 0.76	$ 0.48	$ 0.46	$ 0.57	$ 0.69	$ 0.52	$ 0.44	$ 0.52	$ 2.27	$ 2.17	$ 2.44
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Participating securities (in shares)									111,365	326,375	368,492