Acquisitions and debt (Narrative) (Details) - USD ($) | May. 15, 2015 | Feb. 04, 2015 | Sep. 30, 2015 | Sep. 30, 2014 | Dec. 31, 2014 |
Business Combination, Separately Recognized Transactions [Line Items] | | | | | |
Acquisition fees received by the advisor | | | $ 554,490 | | |
Proceeds from revolving promissory note | | | 20,200,000 | | |
Repayment of promissory note | | | 8,237,709 | | |
Revolving promissory note | | | $ 11,962,291 | | |
Hampton Inn - Des Moines [Member] | | | | | |
Business Combination, Separately Recognized Transactions [Line Items] | | | | | |
Cash consideration paid | | $ 10,900,000 | | | |
Acquisition fees received by the advisor as percentage of acquisition price | | 1.00% | | | |
Acquisition fees received by the advisor | | $ 100,000 | | | |
Proceeds from offering | | 2,700,000 | | | |
Purchase price allocation, land and improvements | | 1,200,000 | | | |
Purchase price allocation, building and improvements | | 9,200,000 | | | |
Purchase price allocation, furnitures and fixtures | | $ 500,000 | | | |
Asset capitalization rate | | 11.30% | | | |
Hampton Inn - Des Moines [Member] | Des Moines Promissory Note [Member] | | | | | |
Business Combination, Separately Recognized Transactions [Line Items] | | | | | |
Proceeds from revolving promissory note | | $ 8,200,000 | | | |
Debt instrument, face amount | | $ 10,000,000 | | | |
Debt Instrument, Term | | 1 year | | | |
Interest rate, Libor plus | | 6.00% | | | |
Interest rate at end of period | | | 6.30% | | |
Origination fee | | $ 100,000 | | | |
Repayment of promissory note | | | $ 5,100,000 | | |
Revolving promissory note | | | 3,100,000 | | |
Remaining availability under promissory note | | | $ 6,900,000 | | |
Courtyard, Durham North Carolina [Member] | | | | | |
Business Combination, Separately Recognized Transactions [Line Items] | | | | | |
Cash consideration paid | $ 16,000,000 | | | | |
Acquisition fees received by the advisor as percentage of acquisition price | 1.00% | | | | |
Acquisition fees received by the advisor | $ 200,000 | | | | |
Proceeds from offering | 4,000,000 | | | | |
Purchase price allocation, land and improvements | 1,000,000 | | | | |
Purchase price allocation, building and improvements | 13,100,000 | | | | |
Purchase price allocation, furnitures and fixtures | $ 1,900,000 | | | | |
Asset capitalization rate | 7.30% | | | | |
Courtyard, Durham North Carolina [Member] | Durham Promissory Note [Member] | | | | | |
Business Combination, Separately Recognized Transactions [Line Items] | | | | | |
Proceeds from revolving promissory note | $ 12,000,000 | | | | |
Debt instrument, face amount | $ 13,000,000 | | | | |
Debt Instrument, Term | 1 year | | | | |
Interest rate, Libor plus | 6.00% | | | | |
Interest rate at end of period | | | 6.30% | | |
Origination fee | $ 130,000 | | | | |
Repayment of promissory note | | | $ 3,100,000 | | |
Revolving promissory note | | | 8,900,000 | | |
Remaining availability under promissory note | | | $ 4,100,000 | | |