Related Party Arrangement, Fees and Expenses Incurred (Detail) (USD $) In Thousands, except Share data, unless otherwise specified
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12 Months Ended |
1 Months Ended |
0 Months Ended |
Dec. 31, 2014
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Dec. 31, 2013
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Dec. 31, 2012
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Oct. 31, 2014
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Dec. 31, 2013
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Jul. 31, 2011
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Dec. 31, 2014
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Related Party Transaction [Line Items] |
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Asset management fees |
$ 355ck0001496454_DueToRelatedPartyAssetManagementFees |
[1] |
$ 894ck0001496454_DueToRelatedPartyAssetManagementFees |
[1] |
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894ck0001496454_DueToRelatedPartyAssetManagementFees |
[1] |
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$ 355ck0001496454_DueToRelatedPartyAssetManagementFees |
[1] |
Asset management fees |
8,481us-gaap_AssetManagementCosts |
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3,614us-gaap_AssetManagementCosts |
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1,369us-gaap_AssetManagementCosts |
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Cash distributions on Restricted Stock |
14,203us-gaap_PaymentsOfDividends |
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6,579us-gaap_PaymentsOfDividends |
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1,459us-gaap_PaymentsOfDividends |
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Stock distributions on Restricted Stock |
2,400,000us-gaap_CommonStockDividendsShares |
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1,100,000us-gaap_CommonStockDividendsShares |
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200,000us-gaap_CommonStockDividendsShares |
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Stock distributions |
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Related Party Transaction [Line Items] |
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Stock distributions on Restricted Stock |
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0.0025us-gaap_CommonStockDividendsShares / us-gaap_DividendsAxis = ck0001496454_StockDividendsMember |
0.00250us-gaap_CommonStockDividendsShares / us-gaap_DividendsAxis = ck0001496454_StockDividendsMember |
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0.002500us-gaap_CommonStockDividendsShares / us-gaap_DividendsAxis = ck0001496454_StockDividendsMember |
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Restricted Stock |
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Related Party Transaction [Line Items] |
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Restricted stock shares |
500,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember |
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Expense Support Agreements |
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Related Party Transaction [Line Items] |
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Asset management fees |
6,269ck0001496454_DueToRelatedPartyAssetManagementFees / us-gaap_RelatedPartyTransactionAxis = ck0001496454_ExpenseSupportAgreementsMember |
[2] |
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6,269ck0001496454_DueToRelatedPartyAssetManagementFees / us-gaap_RelatedPartyTransactionAxis = ck0001496454_ExpenseSupportAgreementsMember |
[2] |
Then-current offering price |
$ 10.58us-gaap_SharePrice / us-gaap_RelatedPartyTransactionAxis = ck0001496454_ExpenseSupportAgreementsMember |
[3] |
$ 10.00us-gaap_SharePrice / us-gaap_RelatedPartyTransactionAxis = ck0001496454_ExpenseSupportAgreementsMember |
[3] |
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10.00us-gaap_SharePrice / us-gaap_RelatedPartyTransactionAxis = ck0001496454_ExpenseSupportAgreementsMember |
[3] |
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$ 10.58us-gaap_SharePrice / us-gaap_RelatedPartyTransactionAxis = ck0001496454_ExpenseSupportAgreementsMember |
[3] |
Asset management fees |
4,867us-gaap_AssetManagementCosts / us-gaap_RelatedPartyTransactionAxis = ck0001496454_ExpenseSupportAgreementsMember |
[2] |
1,402us-gaap_AssetManagementCosts / us-gaap_RelatedPartyTransactionAxis = ck0001496454_ExpenseSupportAgreementsMember |
[2] |
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6,269us-gaap_AssetManagementCosts / us-gaap_RelatedPartyTransactionAxis = ck0001496454_ExpenseSupportAgreementsMember |
[2] |
Then-current offering price |
$ 10.24us-gaap_SharesIssuedPricePerShare / us-gaap_RelatedPartyTransactionAxis = ck0001496454_ExpenseSupportAgreementsMember |
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$ 10.24us-gaap_SharesIssuedPricePerShare / us-gaap_RelatedPartyTransactionAxis = ck0001496454_ExpenseSupportAgreementsMember |
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Expense Support Agreements | Restricted Stock |
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Related Party Transaction [Line Items] |
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Restricted stock shares |
618,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember / us-gaap_RelatedPartyTransactionAxis = ck0001496454_ExpenseSupportAgreementsMember |
[4] |
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618,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardOptionsOutstandingNumber / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember / us-gaap_RelatedPartyTransactionAxis = ck0001496454_ExpenseSupportAgreementsMember |
[4] |
Restricted stock shares |
478,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember / us-gaap_RelatedPartyTransactionAxis = ck0001496454_ExpenseSupportAgreementsMember |
[4] |
140,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember / us-gaap_RelatedPartyTransactionAxis = ck0001496454_ExpenseSupportAgreementsMember |
[4] |
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618,000us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardSharesIssuedInPeriod / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember / us-gaap_RelatedPartyTransactionAxis = ck0001496454_ExpenseSupportAgreementsMember |
[4] |
Cash distributions on Restricted Stock |
98us-gaap_PaymentsOfDividends / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember / us-gaap_RelatedPartyTransactionAxis = ck0001496454_ExpenseSupportAgreementsMember |
[5] |
5us-gaap_PaymentsOfDividends / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember / us-gaap_RelatedPartyTransactionAxis = ck0001496454_ExpenseSupportAgreementsMember |
[5] |
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103us-gaap_PaymentsOfDividends / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember / us-gaap_RelatedPartyTransactionAxis = ck0001496454_ExpenseSupportAgreementsMember |
[5] |
Stock distributions on Restricted Stock |
7,000us-gaap_CommonStockDividendsShares / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember / us-gaap_RelatedPartyTransactionAxis = ck0001496454_ExpenseSupportAgreementsMember |
[6] |
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[6],[7] |
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7,000us-gaap_CommonStockDividendsShares / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember / us-gaap_RelatedPartyTransactionAxis = ck0001496454_ExpenseSupportAgreementsMember |
[6] |
Expense Support Agreements | Restricted Stock | Cash distributions |
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Related Party Transaction [Line Items] |
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Distributions on Restricted Stock |
103us-gaap_CumulativeDividends / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember / us-gaap_DividendsAxis = ck0001496454_CashDividendsMember / us-gaap_RelatedPartyTransactionAxis = ck0001496454_ExpenseSupportAgreementsMember |
[5] |
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103us-gaap_CumulativeDividends / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember / us-gaap_DividendsAxis = ck0001496454_CashDividendsMember / us-gaap_RelatedPartyTransactionAxis = ck0001496454_ExpenseSupportAgreementsMember |
[5] |
Expense Support Agreements | Restricted Stock | Stock distributions |
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Related Party Transaction [Line Items] |
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Distributions on Restricted Stock |
$ 7us-gaap_CumulativeDividends / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember / us-gaap_DividendsAxis = ck0001496454_StockDividendsMember / us-gaap_RelatedPartyTransactionAxis = ck0001496454_ExpenseSupportAgreementsMember |
[6] |
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$ 7us-gaap_CumulativeDividends / us-gaap_AwardTypeAxis = us-gaap_RestrictedStockMember / us-gaap_DividendsAxis = ck0001496454_StockDividendsMember / us-gaap_RelatedPartyTransactionAxis = ck0001496454_ExpenseSupportAgreementsMember |
[6] |
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