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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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No definition available.

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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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- Definition

Amount, after deduction of tax, noncontrolling interests, dividends on preferred stock and participating securities, and addition from assumption of issuance of common shares for dilutive potential common shares; of income (loss) available to common shareholders.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
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- Definition

Number of options outstanding, including both vested and non-vested options.

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- Definition

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

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- Definition

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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Summary of Significant Accounting Policies - Net earnings per common share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Summary of Significant Accounting Policies
Net (loss) earnings									$ 6,889	$ 8,426	$ 3,801
Allocation to nonvested restricted stock awards									(111)	(133)	(61)
Net (loss) earnings available to common stockholders									$ 6,778	$ 8,293	$ 3,740
Weighted-average shares outstanding - basic and diluted									36,130,000	36,275,000	36,232,000
Net (loss) earnings per share - basic and diluted	$ 0.11	$ (0.07)	$ 0.18	$ (0.03)	$ 0.21	$ (0.06)	$ 0.14	$ (0.07)	$ 0.19	$ 0.23	$ 0.10
Options outstanding (in shares)	0				0				0	0	0