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Equity (Details) (USD $)
In Thousands, except Share data, unless otherwise specified
Mar. 31, 2015
Dec. 31, 2014
Limited Partnership Units and Series A Convertible Preferred Stock    
Fair Value of Series A Convertible Preferred Stock $ 4,626us-gaap_TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests $ 4,626us-gaap_TemporaryEquityCarryingAmountIncludingPortionAttributableToNoncontrollingInterests
Tier OP    
Limited Partnership Units and Series A Convertible Preferred Stock    
Units of limited partnership interest held by third parties (in units) 432,586us-gaap_UnitsOfPartnershipInterestAmount
/ dei_LegalEntityAxis
= tier_TierOperatingPartnershipLPMember		  
Services Holdings    
Limited Partnership Units and Series A Convertible Preferred Stock    
Stock issued in exchange of surrender of non-participating and non-voting convertible preferred stock (in shares) 10,000tier_Convertiblepreferredstockoutstanding
/ dei_LegalEntityAxis
= tier_BehringerHarvardReitIServicesHoldingsLlcMember