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Noncash Transactions | 12 Months Ended
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Dec. 31, 2017
Nonmonetary Transactions [Abstract] |
Noncash Transactions | Noncash Transactions On February 29, 2016, the Company completed the ARPI Merger in a stock-for-stock transaction. Each holder of ARPI common stock received 1.135 of the Company's Class A common shares for each share of ARPI common stock and each holder of limited partnership interests in ARPI's operating partnership received 1.135 Class A units of the Operating Partnership. The Company issued 36,546,170 Class A common shares in connection with the ARPI Merger, for which the Operating Partnership issued an equivalent number of corresponding Class A units to AH4R in exchange for the transaction consideration. Additionally, the Operating Partnership issued 1,343,843 Class A units to certain former ARPI employees in connection with the ARPI Merger. The total Class A units issued in connection with the ARPI Merger represented 12.7% of the total common units of the Operating Partnership, on a fully diluted basis assuming the conversion of convertible units into common units, as of the acquisition date (see Note 10).

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- Definition The entire disclosure for exchanges with other entities that involve principally nonmonetary assets or liabilities or relate to a transfer of nonmonetary assets for which the entity receives no assets in return. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 845 -URI http://asc.fasb.org/topic&trid=2127423 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 605 -URI http://asc.fasb.org/topic&trid=2197195 + Details
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