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Basic and Diluted Net Income per Share (Details) - $ / shares	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Basic:
Weighted average shares outstanding	24,708,923	24,718,430	24,833,002	24,683,264
Diluted:
Weighted average shares outstanding	24,708,923	24,718,430	24,833,002	24,683,264
Weighted average effects of dilutive securities	199,251	177,765	199,251	188,259
Total	24,908,174	24,896,195	25,032,253	24,871,523
Antidilutive securities:	$ 265,700	$ 124,000	$ 265,700	$ 124,000

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- Definition

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic net Income or Loss per outstanding limited partnership unit in the future and that were not included in the computation of diluted net income per limited partnership unit, because to do so would increase net income per unit amounts or decrease loss per unit amounts for the period presented.

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The weighted average number of shares or units and dilutive common stock or unit equivalents outstanding in the calculation of proforma diluted earnings per share (earnings per unit), which is commonly presented in initial public offerings based on the terms of the offering.

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The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

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Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.

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