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Significant Credit and Revenue Concentration - Additional Information (Detail)
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6 Months Ended | 12 Months Ended | |
|---|---|---|---|
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Jun. 30, 2014
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Jun. 30, 2013
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Dec. 31, 2013
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| Revenue, Major Customer [Line Items] | |||
| Number of tenants | 404 | 377 | |
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Shopko And Pamida
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| Revenue, Major Customer [Line Items] | |||
| Rental revenue in percentage of total revenue | 13.80% | 28.90% | |
| Rental revenue by combined properties operated by tenants | 13.80% | 14.40% | |