Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Net income	$ 12,539	$ 10,294	$ 29,586	$ 22,902
Other Comprehensive Income [Abstract]
Change in fair value of interest rate swap agreements	(916)	652	(1,696)	652
Total other comprehensive income	(916)	652	(1,696)	652
Comprehensive income	11,623	10,946	27,890	23,554
Comprehensive income attributable to noncontrolling interests - Operating Partnership	(339)	(272)	(774)	(646)
Comprehensive income attributable to noncontrolling interests - partially owned properties	(53)	(176)	(379)	(553)
Comprehensive income attributable to common shareholders	11,231	10,498	26,737	22,355
Operating Partnership
Net income	12,539	10,294	29,586	22,902
Other Comprehensive Income [Abstract]
Change in fair value of interest rate swap agreements	(916)	652	(1,696)	652
Total other comprehensive income	(916)	652	(1,696)	652
Comprehensive income	11,623	10,946	27,890	23,554
Comprehensive income attributable to noncontrolling interests - partially owned properties	(53)	(176)	(379)	(553)
Comprehensive income attributable to common shareholders	$ 11,570	$ 10,770	$ 27,511	$ 23,001

Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest, Partially Owned Properties

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Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income, attributable to parent entity. Excludes changes in equity resulting from investments by owners and distributions to owners.

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Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income (loss) and other comprehensive income (loss), attributable to noncontrolling interests. Excludes changes in equity resulting from investments by owners and distributions to owners.

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Amount after tax of increase (decrease) in equity from transactions and other events and circumstances from net income and other comprehensive income. Excludes changes in equity resulting from investments by owners and distributions to owners.

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Amount after tax and reclassification adjustments, of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss).

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Amount after tax and reclassification adjustments of other comprehensive income (loss).

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The consolidated profit or loss for the period, net of income taxes, including the portion attributable to the noncontrolling interest.

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