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Mortgage Notes Payable, Net - Schedule of Long-term Debt Instruments (Details) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2018 USD ($) property | Sep. 30, 2017 USD ($) | Sep. 30, 2018 USD ($) property | Sep. 30, 2017 USD ($) | Dec. 31, 2017 USD ($)
Debt Instrument [Line Items] |  |  |  |  |
Mortgage notes payable, net | $ 974,515 |  | $ 974,515 |  | $ 984,876
Loss on extinguishment of debt | $ 2,612 | $ 0 | $ 3,897 | $ 0 |
Mortgage notes payable |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Encumbered Properties (property) | property | 87 |  | 87 |  |
Term Loan | $ 983,634 |  | $ 983,634 |  | 992,344
Mortgage discount | (696) |  | (696) |  | (1,927)
Deferred financing costs, net of accumulated amortization | (8,423) |  | (8,423) |  | (5,541)
Mortgage notes payable, net | $ 974,515 |  | $ 974,515 |  | 984,876
Effective Interest Rate | 2.90% |  | 2.90% |  |
Mortgage notes payable | Quest Diagnostics | LIBOR |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Interest rate spread |  |  | 2.00% |  |
Mortgage notes payable | EUR |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Encumbered Properties (property) | property | 22 |  | 22 |  |
Term Loan | $ 377,860 |  | $ 377,860 |  | 390,215
Mortgage notes payable | EUR | Finnair |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Encumbered Properties (property) | property | 4 |  | 4 |  |
Term Loan | $ 32,957 |  | $ 32,957 |  | 34,022
Effective Interest Rate | 2.20% |  | 2.20% |  |
Mortgage notes payable | EUR | Tokmanni |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Encumbered Properties (property) | property | 1 |  | 1 |  |
Term Loan | $ 33,625 |  | $ 33,625 |  | 34,711
Effective Interest Rate | 2.40% |  | 2.40% |  |
Mortgage notes payable | EUR | Auchan |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Encumbered Properties (property) | property | 1 |  | 1 |  |
Term Loan | $ 9,632 |  | $ 9,632 |  | 9,943
Effective Interest Rate | 1.70% |  | 1.70% |  |
Mortgage notes payable | EUR | Pole Emploi |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Encumbered Properties (property) | property | 1 |  | 1 |  |
Term Loan | $ 6,731 |  | $ 6,731 |  | 6,948
Effective Interest Rate | 1.70% |  | 1.70% |  |
Mortgage notes payable | EUR | Sagemcom |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Encumbered Properties (property) | property | 1 |  | 1 |  |
Term Loan | $ 41,661 |  | $ 41,661 |  | 43,006
Effective Interest Rate | 1.70% |  | 1.70% |  |
Mortgage notes payable | EUR | Worldline |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Encumbered Properties (property) | property | 1 |  | 1 |  |
Term Loan | $ 5,802 |  | $ 5,802 |  | 5,990
Effective Interest Rate | 1.90% |  | 1.90% |  |
Mortgage notes payable | EUR | DCNS |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Encumbered Properties (property) | property | 1 |  | 1 |  |
Term Loan | $ 11,024 |  | $ 11,024 |  | 11,381
Effective Interest Rate | 1.50% |  | 1.50% |  |
Mortgage notes payable | EUR | ID Logistics II |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Encumbered Properties (property) | property | 2 |  | 2 |  |
Term Loan | $ 12,185 |  | $ 12,185 |  | 12,578
Effective Interest Rate | 1.30% |  | 1.30% |  |
Mortgage notes payable | EUR | Rheinmetall |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Encumbered Properties (property) | property | 1 |  | 1 |  |
Term Loan | $ 12,301 |  | $ 12,301 |  | 12,698
Effective Interest Rate | 2.60% |  | 2.60% |  |
Mortgage notes payable | EUR | OBI DIY |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Encumbered Properties (property) | property | 1 |  | 1 |  |
Term Loan | $ 5,222 |  | $ 5,222 |  | 5,391
Effective Interest Rate | 2.40% |  | 2.40% |  |
Mortgage notes payable | EUR | RWE AG |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Encumbered Properties (property) | property | 3 |  | 3 |  |
Term Loan | $ 72,529 |  | $ 72,529 |  | 74,872
Effective Interest Rate | 1.60% |  | 1.60% |  |
Mortgage notes payable | EUR | Rexam |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Encumbered Properties (property) | property | 1 |  | 1 |  |
Term Loan | $ 5,959 |  | $ 5,959 |  | 6,301
Effective Interest Rate | 1.80% |  | 1.80% |  |
Mortgage notes payable | EUR | Metro Tonic |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Encumbered Properties (property) | property | 1 |  | 1 |  |
Term Loan | $ 30,752 |  | $ 30,752 |  | 31,746
Effective Interest Rate | 1.70% |  | 1.70% |  |
Mortgage notes payable | EUR | ID Logistics I |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Encumbered Properties (property) | property | 1 |  | 1 |  |
Term Loan | $ 4,642 |  | $ 4,642 |  | 4,792
Effective Interest Rate | 1.00% |  | 1.00% |  |
Mortgage notes payable | EUR | DB Luxembourg |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Encumbered Properties (property) | property | 1 |  | 1 |  |
Term Loan | $ 41,777 |  | $ 41,777 |  | 43,126
Effective Interest Rate | 1.40% |  | 1.40% |  |
Mortgage notes payable | EUR | ING Amsterdam |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Encumbered Properties (property) | property | 1 |  | 1 |  |
Term Loan | $ 51,061 |  | $ 51,061 |  | 52,710
Effective Interest Rate | 1.70% |  | 1.70% |  |
Mortgage notes payable | GBP |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Encumbered Properties (property) | property | 43 |  | 43 |  |
Term Loan | $ 299,674 |  | $ 299,674 |  | 301,141
Fixed interest, percent of principal amount covered by derivative instrument |  |  | 80.00% |  |
Mortgage notes payable | GBP | LIBOR |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Variable interest, percent of principal amount covered by derivative instrument |  |  | 20.00% |  |
Mortgage notes payable | GBP | McDonald's |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Encumbered Properties (property) | property | 0 |  | 0 |  |
Term Loan | $ 0 |  | $ 0 |  | 1,025
Effective Interest Rate | 0.00% |  | 0.00% |  |
Mortgage notes payable | GBP | Wickes Building Supplies I |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Encumbered Properties (property) | property | 0 |  | 0 |  |
Term Loan | $ 0 |  | $ 0 |  | 2,226
Effective Interest Rate | 0.00% |  | 0.00% |  |
Mortgage notes payable | GBP | Everything Everywhere |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Encumbered Properties (property) | property | 0 |  | 0 |  |
Term Loan | $ 0 |  | $ 0 |  | 5,397
Effective Interest Rate | 0.00% |  | 0.00% |  |
Mortgage notes payable | GBP | Thames Water |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Encumbered Properties (property) | property | 0 |  | 0 |  |
Term Loan | $ 0 |  | $ 0 |  | 8,096
Effective Interest Rate | 0.00% |  | 0.00% |  |
Mortgage notes payable | GBP | Wickes Building Supplies II |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Encumbered Properties (property) | property | 0 |  | 0 |  |
Term Loan | $ 0 |  | $ 0 |  | 2,626
Effective Interest Rate | 0.00% |  | 0.00% |  |
Mortgage notes payable | GBP | Northern Rock |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Encumbered Properties (property) | property | 0 |  | 0 |  |
Term Loan | $ 0 |  | $ 0 |  | 7,084
Effective Interest Rate | 0.00% |  | 0.00% |  |
Mortgage notes payable | GBP | Wickes Building Supplies III |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Encumbered Properties (property) | property | 0 |  | 0 |  |
Term Loan | $ 0 |  | $ 0 |  | 2,564
Effective Interest Rate | 0.00% |  | 0.00% |  |
Mortgage notes payable | GBP | Provident Financial |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Encumbered Properties (property) | property | 0 |  | 0 |  |
Term Loan | $ 0 |  | $ 0 |  | 17,203
Effective Interest Rate | 0.00% |  | 0.00% |  |
Mortgage notes payable | GBP | Crown Crest |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Encumbered Properties (property) | property | 0 |  | 0 |  |
Term Loan | $ 0 |  | $ 0 |  | 25,973
Effective Interest Rate | 0.00% |  | 0.00% |  |
Mortgage notes payable | GBP | Aviva |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Encumbered Properties (property) | property | 0 |  | 0 |  |
Term Loan | $ 0 |  | $ 0 |  | 21,183
Effective Interest Rate | 0.00% |  | 0.00% |  |
Mortgage notes payable | GBP | Bradford & Bingley |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Encumbered Properties (property) | property | 0 |  | 0 |  |
Term Loan | $ 0 |  | $ 0 |  | 10,200
Effective Interest Rate | 0.00% |  | 0.00% |  |
Mortgage notes payable | GBP | Intier Automotive Interiors |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Encumbered Properties (property) | property | 0 |  | 0 |  |
Term Loan | $ 0 |  | $ 0 |  | 6,375
Effective Interest Rate | 0.00% |  | 0.00% |  |
Mortgage notes payable | GBP | Capgemini |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Encumbered Properties (property) | property | 0 |  | 0 |  |
Term Loan | $ 0 |  | $ 0 |  | 6,381
Effective Interest Rate | 0.00% |  | 0.00% |  |
Mortgage notes payable | GBP | Fujitsu |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Encumbered Properties (property) | property | 0 |  | 0 |  |
Term Loan | $ 0 |  | $ 0 |  | 33,435
Effective Interest Rate | 0.00% |  | 0.00% |  |
Mortgage notes payable | GBP | Amcor Packaging |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Encumbered Properties (property) | property | 0 |  | 0 |  |
Term Loan | $ 0 |  | $ 0 |  | 4,218
Effective Interest Rate | 0.00% |  | 0.00% |  |
Mortgage notes payable | GBP | Fife Council |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Encumbered Properties (property) | property | 0 |  | 0 |  |
Term Loan | $ 0 |  | $ 0 |  | 2,474
Effective Interest Rate | 0.00% |  | 0.00% |  |
Mortgage notes payable | GBP | Malthrust |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Encumbered Properties (property) | property | 0 |  | 0 |  |
Term Loan | $ 0 |  | $ 0 |  | 4,318
Effective Interest Rate | 0.00% |  | 0.00% |  |
Mortgage notes payable | GBP | Talk Talk |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Encumbered Properties (property) | property | 0 |  | 0 |  |
Term Loan | $ 0 |  | $ 0 |  | 5,161
Effective Interest Rate | 0.00% |  | 0.00% |  |
Mortgage notes payable | GBP | HBOS |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Encumbered Properties (property) | property | 0 |  | 0 |  |
Term Loan | $ 0 |  | $ 0 |  | 7,272
Effective Interest Rate | 0.00% |  | 0.00% |  |
Mortgage notes payable | GBP | DFS Trading |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Encumbered Properties (property) | property | 0 |  | 0 |  |
Term Loan | $ 0 |  | $ 0 |  | 13,680
Effective Interest Rate | 0.00% |  | 0.00% |  |
Mortgage notes payable | GBP | DFS Trading |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Encumbered Properties (property) | property | 0 |  | 0 |  |
Term Loan | $ 0 |  | $ 0 |  | 3,203
Effective Interest Rate | 0.00% |  | 0.00% |  |
Mortgage notes payable | GBP | HP Enterprise Services |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Encumbered Properties (property) | property | 0 |  | 0 |  |
Term Loan | $ 0 |  | $ 0 |  | 12,531
Effective Interest Rate | 0.00% |  | 0.00% |  |
Mortgage notes payable | GBP | Foster Wheeler |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Encumbered Properties (property) | property | 0 |  | 0 |  |
Term Loan | $ 0 |  | $ 0 |  | 53,026
Effective Interest Rate | 0.00% |  | 0.00% |  |
Mortgage notes payable | GBP | Harper Collins |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Encumbered Properties (property) | property | 0 |  | 0 |  |
Term Loan | $ 0 |  | $ 0 |  | 37,880
Effective Interest Rate | 0.00% |  | 0.00% |  |
Mortgage notes payable | GBP | NCR Dundee |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Encumbered Properties (property) | property | 0 |  | 0 |  |
Term Loan | $ 0 |  | $ 0 |  | 7,610
Effective Interest Rate | 0.00% |  | 0.00% |  |
Mortgage notes payable | GBP | UK Multi-Property Cross Collateralized Loan |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Encumbered Properties (property) | property | 43 |  | 43 |  |
Term Loan | $ 299,674 |  | $ 299,674 |  | 0
Effective Interest Rate | 3.20% |  | 3.20% |  |
Mortgage notes payable | USD |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Encumbered Properties (property) | property | 22 |  | 22 |  |
Term Loan | $ 306,100 |  | $ 306,100 |  | 300,988
Mortgage notes payable | USD | Quest Diagnostics |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Encumbered Properties (property) | property | 1 |  | 1 |  |
Term Loan | $ 52,800 |  | $ 52,800 |  | 52,800
Effective Interest Rate | 4.20% |  | 4.20% |  |
Mortgage notes payable | USD | Western Digital |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Encumbered Properties (property) | property | 0 |  | 0 |  |
Term Loan | $ 0 |  | $ 0 |  | 17,363
Effective Interest Rate | 0.00% |  | 0.00% |  |
Loss on extinguishment of debt |  |  | $ 1,300 |  |
Mortgage notes payable | USD | AT&T Services |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Encumbered Properties (property) | property | 1 |  | 1 |  |
Term Loan | $ 33,550 |  | $ 33,550 |  | 33,550
Effective Interest Rate | 2.00% |  | 2.00% |  |
Mortgage notes payable | USD | AT&T Services | Adjusted LIBOR |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Interest rate spread |  |  | 2.00% |  |
Mortgage notes payable | USD | FedEx Freight |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Encumbered Properties (property) | property | 0 |  | 0 |  |
Term Loan | $ 0 |  | $ 0 |  | 6,165
Effective Interest Rate | 0.00% |  | 0.00% |  |
Mortgage notes payable | USD | Veolia Water |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Encumbered Properties (property) | property | 0 |  | 0 |  |
Term Loan | $ 0 |  | $ 0 |  | 4,110
Effective Interest Rate | 0.00% |  | 0.00% |  |
Mortgage notes payable | USD | Multi-Tenant Mortgage Loan I |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Encumbered Properties (property) | property | 12 |  | 12 |  |
Term Loan | $ 187,000 |  | $ 187,000 |  | 187,000
Effective Interest Rate | 4.40% |  | 4.40% |  |
Mortgage notes payable | USD | Multi-Tenant Mortgage Loan II |  |  |  |  |
Debt Instrument [Line Items] |  |  |  |  |
Encumbered Properties (property) | property | 8 |  | 8 |  |
Term Loan | $ 32,750 |  | $ 32,750 |  | $ 0
Effective Interest Rate | 4.40% |  | 4.40% |  |

X
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- Definition Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 20 -Section 50 -Paragraph 4 -Subparagraph (b)(1) -URI http://asc.fasb.org/extlink&oid=109500613&loc=SL6031897-161870 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(16)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(16)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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