Subsequent Events	12 Months Ended
Dec. 31, 2016
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events Credit Facilities As of February 22, 2017, the Company had no outstanding borrowings under our revolving credit facility. From January 1, 2017, through February 22, 2017, the Company borrowed an additional $25.0 million under our term loan facility, resulting in an outstanding balance of $350.0 million as of February 22, 2017. Subsequent Dispositions From January 1, 2017 through February 22, 2017, we disposed of 60 properties for aggregate net proceeds of approximately $6.3 million. Subsequent Acquisitions From January 1, 2017 through February 22, 2017, we acquired 200 properties with an aggregate purchase price of approximately $32.7 million. Share Issuances From January 1, 2017, through February 22, 2017, the Company issued 0.2 million Class A common shares under its "at the market" program for gross proceeds of $5.3 million, or $21.27 per share, and net proceeds of $5.2 million, after commissions and other expenses of approximately $0.1 million. As of February 22, 2017, $290.7 million remained available for future share issuances under the "at the market" program. Declaration of Dividends On February 23, 2017, our board of trustees declared quarterly dividends of $0.05 per Class A common share payable on March 31, 2017, to shareholders of record on March 15, 2017, and $0.05 per Class B common share payable on March 31, 2017, to shareholders of record on March 15, 2017. Additionally, our board of trustees also declared quarterly dividends of $0.3125 per share on the Company's 5.0% Series A participating preferred shares payable on March 31, 2017, to shareholders of record on March 15, 2017, $0.3125 per share on the Company's 5.0% Series B participating preferred shares payable on March 31, 2017, to shareholders of record on March 15, 2017, $0.34375 per share on the Company's 5.5% Series C participating preferred shares payable on March 31, 2017, to shareholders of record on March 15, 2017, $0.40625 per share on the Company’s 6.5% Series D perpetual preferred shares payable on March 31, 2017, to shareholders of record on March 15, 2017, and $0.39688 per share on the Company’s 6.35% Series E perpetual preferred shares payable on March 31, 2017, to shareholders of record on March 15, 2017.

Subsequent Events

Credit Facilities

As of February 22, 2017, the Company had no outstanding borrowings under our revolving credit facility. From January 1, 2017, through February 22, 2017, the Company borrowed an additional $25.0 million under our term loan facility, resulting in an outstanding balance of $350.0 million as of February 22, 2017.

Subsequent Dispositions

From January 1, 2017 through February 22, 2017, we disposed of 60 properties for aggregate net proceeds of approximately $6.3 million.

Subsequent Acquisitions

From January 1, 2017 through February 22, 2017, we acquired 200 properties with an aggregate purchase price of approximately $32.7 million.

Share Issuances

From January 1, 2017, through February 22, 2017, the Company issued 0.2 million Class A common shares under its "at the market" program for gross proceeds of $5.3 million, or $21.27 per share, and net proceeds of $5.2 million, after commissions and other expenses of approximately $0.1 million. As of February 22, 2017, $290.7 million remained available for future share issuances under the "at the market" program.

Declaration of Dividends

On February 23, 2017, our board of trustees declared quarterly dividends of $0.05 per Class A common share payable on March 31, 2017, to shareholders of record on March 15, 2017, and $0.05 per Class B common share payable on March 31, 2017, to shareholders of record on March 15, 2017. Additionally, our board of trustees also declared quarterly dividends of $0.3125 per share on the Company's 5.0% Series A participating preferred shares payable on March 31, 2017, to shareholders of record on March 15, 2017, $0.3125 per share on the Company's 5.0% Series B participating preferred shares payable on March 31, 2017, to shareholders of record on March 15, 2017, $0.34375 per share on the Company's 5.5% Series C participating preferred shares payable on March 31, 2017, to shareholders of record on March 15, 2017, $0.40625 per share on the Company’s 6.5% Series D perpetual preferred shares payable on March 31, 2017, to shareholders of record on March 15, 2017, and $0.39688 per share on the Company’s 6.35% Series E perpetual preferred shares payable on March 31, 2017, to shareholders of record on March 15, 2017.