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Real Estate (Tables) | 9 Months Ended | 12 Months Ended
--- | --- | ---
Sep. 30, 2018 | Dec. 31, 2017
Real Estate [Line Items] |  |
Schedule of Aggregate purchase price of the acquisitions |  | The purchase price and other acquisition items for the properties acquired during the year ended December 31, 2017 are shown below:
|  |  |  |  |  |  |  |  |  |  |  | Paid to Advisor |  |
Property |  | Location |  | Tenant/Major Lessee |  | Acquisition Date |  | Purchase Price |  | Approx. Square Feet |  | Acquisition Fees and Reimbursable Expenses (1) |  | Contingent Advisor Payment (2) |  | Year of Lease Expiration
Allstate |  | Lone Tree, CO |  | Allstate Insurance Company |  | 1/31/2017 |  | $ | 14,750 |  | (3) | 70,300 |  |  | $ | 402 |  |  | $ | 273 |  |  | 2026
MISO |  | Carmel, IN |  | Midcontinent Independent System Operator, Inc. |  | 5/15/2017 |  | $ | 28,600 |  |  | 133,400 |  |  | $ | 696 |  |  | $ | 529 |  |  | 2028
(1) | Under the Original Advisory Agreement, the fee consisted of a 2.0% base acquisition fee and acquisition expense reimbursement for actual acquisition expenses incurred, estimated to be approximately 1.0% of acquisition value.
(2) | Under the Original Advisory Agreement, the Advisor was entitled to receive an acquisition fee in an amount up to 3.85% of the contract purchase price for each property the Company acquired. The acquisition fee consisted of a 2.0% base acquisition fee and up to an additional 1.85% contingent advisor payment (the “Contingent Advisor Payment”); provided, however, that $5.0 million of amounts advanced by the Advisor for dealer manager fees and organizational and offering expenses (the “Contingent Advisor Payment Holdback”) would be retained by the Company until the later of (a) the termination of the IPO, including any follow-on offerings where the Advisor provides up-front funding of offering fees, or (b) July 31, 2017, at which time such amount would be paid to the Advisor. On July 31, 2017, the Company paid to the Advisor the Contingent Advisor Payment Holdback of $5.0 million, which consisted of amounts previously advanced by the Advisor for dealer manager fees and organizational and offering expenses.
(3) | The purchase price for the Allstate property was $14.8 million, plus closing costs, less a credit in the amount of $0.4 million applied at closing.
Summary of purchase price allocation |  | The following summarizes the purchase price allocations for the properties acquired during the year ended December 31, 2017:
Property(1) |  | Land |  | Building and Improvements |  | Tenant Origination and Absorption Cost |  | In-Place Lease Valuation Above Market |  | In-Place Lease Valuation (Below) Market |  | Total |
Allstate |  | $ | 1,808 |  |  | $ | 9,071 |  |  | $ | 5,019 |  |  | $ | — |  |  | $ | (1,001 | ) |  | $ | 14,897 |  |
MISO |  | $ | 3,104 |  |  | $ | 18,077 |  |  | $ | 7,937 |  |  | $ | 218 |  |  | $ | — |  |  | $ | 29,336 |  |
(1) | The Company evaluated the transactions above under the clarified framework for determining whether an integrated set of assets and activities meets the definition of a business, pursuant to ASU No. 2017-01, Business Combinations, issued in January 2017, which the Company early-adopted effective October 1, 2016. Acquisitions that do not meet the definition of a business are accounted for as asset acquisitions. Since the transactions above lacked a substantive process, the transactions did not meet the definition of a business and consequently were accounted for as asset acquisitions. The Company allocated the total consideration (including acquisition costs of approximately $1.2 million) to the individual assets and liabilities acquired on a relative fair value basis.
Schedule of future minimum contractual rent payments | The future minimum contractual rent payments pursuant to the current lease terms are shown in the table below. The Company's current leases have expirations ranging from 2021 to 2044.
| As of September 30, 2018
Remaining 2018 | $ | 19,311 |
2019 | 78,887 |
2020 | 80,492 |
2021 | 72,677 |
2022 | 73,538 |
Thereafter | 528,803 |
Total | $ | 853,708 |
| The future minimum contractual rent payments pursuant to the current lease terms are shown in the table below. The Company’s current leases have expirations ranging from 2020 to 2044.
| As of December 31, 2017
2018 | $ | 71,662 |
2019 | 78,887 |
2020 | 80,492 |
2021 | 72,677 |
2022 | 73,538 |
Thereafter | 528,803 |
Total | $ | 906,059 |
Schedule of in-place lease valuation and tenant origination and absorption cost | The Company allocated a portion of the acquired real estate asset value to in-place lease valuation and tenant origination and absorption cost. The in-place lease was measured against comparable leasing information and the present value of the difference between the contractual, in-place rent and the fair market rent was calculated using, as the discount rate, the capitalization rate utilized to compute the value of the real estate at acquisition.
| September 30, 2018 |  | December 31, 2017
In-place lease valuation (above market) | $ | 4,046 |  |  | $ | 4,046 |
In-place lease valuation (above market), accumulated amortization | (1,030 | ) |  | (752 | )
Intangible assets, net | $ | 3,016 |  |  | $ | 3,294 |
In-place lease valuation (below market) | $ | (62,070 | ) |  | $ | (62,070 | )
In-place lease valuation (below market) - accumulated amortization | 14,564 |  |  | 10,775 |
In-place lease valuation (below market), net | $ | (47,506 | ) |  | $ | (51,295 | )
Tenant origination and absorption cost | $ | 240,364 |  |  | $ | 240,364 |
Tenant origination and absorption cost - accumulated amortization | (65,264 | ) |  | (47,165 | )
Tenant origination and absorption cost, net | $ | 175,100 |  |  | $ | 193,199 |
| The Company allocated a portion of the acquired real estate asset value to in-place lease valuation and tenant origination and absorption cost. The in-place lease was measured against comparable leasing information and the present value of the difference between the contractual, in-place rent and the fair market rent was calculated using, as the discount rate, the capitalization rate utilized to compute the value of the real estate at acquisition. The intangible assets are amortized over the remaining lease terms of the respective properties, which on a weighted-average basis, was approximately 10.3 and 11.4 years as of December 31, 2017 and December 31, 2016, respectively.
| December 31, 2017 |  | December 31, 2016
In-place lease valuation (above market) | $ | 4,046 |  |  | $ | 3,828 |
In-place lease valuation (above market), accumulated amortization | (752 | ) |  | (300 | )
Intangible assets, net | $ | 3,294 |  |  | $ | 3,528 |
In-place lease valuation (below market) | $ | (62,070 | ) |  | $ | (61,069 | )
In-place lease valuation (below market) - accumulated amortization | 10,775 |  |  | 5,750 |
In-place lease valuation (below market), net | $ | (51,295 | ) |  | $ | (55,319 | )
Tenant origination and absorption cost | $ | 240,364 |  |  | $ | 227,407 |
Tenant origination and absorption cost - accumulated amortization | (47,165 | ) |  | (23,409 | )
Tenant origination and absorption cost, net | $ | 193,199 |  |  | $ | 203,998 |
Schedule of estimated annual amortization (income) expense |  | The amortization of the intangible assets and other leasing costs for the respective periods is as follows:
| Amortization (income) expense for the year ended December 31,
| 2017 |  | 2016 |  | 2015
In-place lease valuation | $ | (4,573 | ) |  | $ | (3,592 | ) |  | $ | (1,858 | )
Tenant origination and absorption cost | $ | 23,756 |  |  | $ | 16,264 |  |  | $ | 7,145 |
Estimated annual amortization (income) expense, in-place lease valuation | The following table sets forth the estimated annual amortization (income) expense for in-place lease valuation, and tenant origination and absorption costs as of September 30, 2018 for the next five years:
Year |  | In-Place Lease Valuation |  | Tenant Origination and Absorption Costs
Remaining 2018 |  | $ | (1,170 | ) |  | $ | 6,033 |
2019 |  | $ | (4,695 | ) |  | $ | 24,198 |
2020 |  | $ | (4,695 | ) |  | $ | 24,198 |
2021 |  | $ | (3,799 | ) |  | $ | 19,715 |
2022 |  | $ | (3,799 | ) |  | $ | 19,597 |
| The following table sets forth the estimated annual amortization (income) expense for in-place lease valuation, and tenant origination and absorption costs as of December 31, 2017 for the next five years:
Year |  | In-Place Lease Valuation |  | Tenant Origination and Absorption Costs
2018 |  | $ | (4,695 | ) |  | $ | 24,198 |
2019 |  | $ | (4,695 | ) |  | $ | 24,198 |
2020 |  | $ | (4,695 | ) |  | $ | 24,198 |
2021 |  | $ | (3,799 | ) |  | $ | 19,715 |
2022 |  | $ | (3,799 | ) |  | $ | 19,597 |
Griffin Capital Essential Asset REIT, Inc. [Member] |  |
Real Estate [Line Items] |  |
Schedule of Aggregate purchase price of the acquisitions | The purchase price and other acquisition items for the properties acquired during the nine months ended September 30, 2018 are shown below:
Property |  | Location |  | Tenant/Major Lessee |  | Acquisition Date |  | Purchase Price |  | Approx. Square Feet |  | Acquisition Fees and Expenses (1) |  | Year of Lease Expiration
Quaker |  | Lakeland, Florida |  | Quaker Sales and Distribution, Inc. |  | 3/13/2018 |  | $ | 59,600 |  |  | 605,400 |  | $ | 1,777 |  |  | 2028
McKesson |  | Scottsdale, Arizona |  | McKesson Corporation |  | 4/10/2018 |  | $ | 67,000 |  |  | 271,100 |  | $ | 2,139 |  |  | 2028
Shaw |  | Wentworth, Georgia |  | Shaw Industries, Inc. |  | 5/3/2018 |  | $ | 56,526 |  |  | 1,001,500 |  | $ | 1,782 |  |  | 2033
(1) | The Advisor is entitled to receive acquisition fees equal to 2.5% and acquisition expense reimbursement of up to 0.5% of the contract purchase price for each acquisition. In addition, the Company incurred third-party costs associated with the three acquisitions.
| The purchase price and other acquisition items for the property acquired during the year ended December 31, 2017 are shown below:
Property |  | Location |  | Tenant/Major Lessee |  | Acquisition Date |  | Purchase Price |  | Approx. Square Feet |  | Acquisition Fees Paid to the Advisor (1) |  | Year of Lease Expiration
LPL |  | Fort Mill, SC |  | LPL Holdings, Inc. |  | 11/30/2017 |  | $ | 130,000 |  |  | 451,600 |  | $ | 3,791 |  |  | 2036
(1) | The Advisor is entitled to receive acquisition fees equal to 2.5% and acquisition expense reimbursement of up to 0.5% of the contract purchase price for each acquisition.
Summary of purchase price allocation |  | The following summarizes the purchase price allocation of the LPL property acquired during the year ended December 31, 2017:
Property |  | Land |  | Building and improvements |  | Tenant origination and absorption costs |  | In-place lease valuation - above market |  | Total
LPL (1) |  | $ | 5,886 |  |  | $ | 108,000 |  |  | $ | 19,859 |  |  | $ | 383 |  |  | $ | 134,128 |
(1) | The Company evaluated the transactions above under the clarified framework for determining whether an integrated set of assets and activities meets the definition of a business, pursuant to ASU No. 2017-01, Business Combinations, issued in January 2017, which the Company early-adopted effective January 1, 2017. Acquisitions that do not meet the definition of a business are accounted for as asset acquisitions. Since the transaction above lacked a substantive process, the transaction did not meet the definition of a business and consequently was accounted for as asset acquisition. The Company allocated the total consideration (including acquisition costs of approximately $4.1 million) to the individual assets and liabilities acquired on a relative fair value basis.
Schedule of future minimum contractual rent payments | The following summarizes the purchase price allocations of the properties acquired during the nine months ended September 30, 2018:
Property (1) |  | Land |  | Building and improvements |  | Tenant origination and absorption costs |  | In-place lease valuation - above (below) market |  | Receivable- Ground Lease |  | Payable- Ground Lease Payments |  | Total
Quaker |  | $ | 5,433 |  |  | $ | 50,953 |  |  | $ | 4,387 |  |  | $ | (502 | ) |  | $ | — |  |  | $ | — |  |  | $ | 60,271 |
McKesson |  | $ | 312 |  |  | $ | 45,109 |  |  | $ | 24,652 |  |  | $ | (933 | ) |  | $ | — |  |  | $ | — |  |  | $ | 69,140 |
Shaw |  | $ | 5,465 |  |  | $ | 48,820 |  |  | $ | 8,297 |  |  | $ | (4,273 | ) |  | $ | 2,008 |  |  | $ | (2,008 | ) |  | $ | 58,309 |
(1) | The Company evaluated the transactions above under the clarified framework for determining whether an integrated set of assets and activities meets the definition of a business, pursuant to ASU No. 2017-01, Business Combinations, issued in January 2017, which the Company early-adopted effective January 1, 2017. Acquisitions that do not meet the definition of a business are accounted for as asset acquisitions. Since the transactions above lacked a substantive process, the transactions did not meet the definition of a business and consequently were accounted for as asset acquisitions. The Company allocated the total consideration (including acquisition costs of approximately $5.7 million) to the individual assets and liabilities acquired on a relative fair value basis.
The future minimum contractual rent payments pursuant to the current lease terms are shown in the table below. The Company's current leases have expirations ranging from 2018 to 2036.
| As of September 30, 2018
Remaining 2018 | $ | 61,164 |
2019 | 226,557 |
2020 | 204,640 |
2021 | 191,182 |
2022 | 182,708 |
Thereafter | 803,849 |
Total | $ | 1,670,100 |
| The future minimum contractual rent payments pursuant to the current lease terms are shown in the table below. The Company’s current leases have expirations ranging from 2018 to 2036.
| As of December 31, 2017
2018 | $ | 231,620 |
2019 | 210,449 |
2020 | 188,653 |
2021 | 174,053 |
2022 | 164,494 |
Thereafter | 664,226 |
Total | $ | 1,633,495 |
Schedule of in-place lease valuation and tenant origination and absorption cost | The Company allocated a portion of the acquired and contributed real estate asset value to in-place lease valuation and tenant origination and absorption cost, net of the write-off of intangibles, as of September 30, 2018 and December 31, 2017:
| September 30, 2018 |  | December 31, 2017
In-place lease valuation (above market) | $ | 42,736 |  |  | $ | 42,736 |
In-place lease valuation (above market) - accumulated amortization | (31,065 | ) |  | (26,613 | )
In-place lease valuation (above market), net | 11,671 |  |  | 16,123 |
Ground leasehold interest (below market) | 2,254 |  |  | 2,255 |
Ground leasehold interest (below market) - accumulated amortization | (129 | ) |  | (109 | )
Ground leasehold interest (below market), net | 2,125 |  |  | 2,146 |
Intangible assets, net | $ | 13,796 |  |  | $ | 18,269 |
In-place lease valuation (below market) | $ | (55,482 | ) |  | $ | (49,774 | )
In-place lease valuation (below market) - accumulated amortization | 30,779 |  |  | 26,193 |
In-place lease valuation (below market), net | $ | (24,703 | ) |  | $ | (23,581 | )
Tenant origination and absorption cost | $ | 532,207 |  |  | $ | 494,871 |
Tenant origination and absorption cost - accumulated amortization | (284,763 | ) |  | (242,108 | )
Tenant origination and absorption cost, net | $ | 247,444 |  |  | $ | 252,763 |
| The Company allocated a portion of the acquired and contributed real estate asset value to in-place lease valuation and tenant origination and absorption cost, net of the write-off of intangibles for the years ended December 31, 2017 and 2016. In-place leases were measured against comparable leasing information and the present value of the difference between the contractual, in-place rent, and the fair market rent was calculated using, as the discount rate, the capitalization rate utilized to compute the value of the real estate at acquisition or contribution.
| December 31,
| 2017 |  | 2016
In-place lease valuation (above market) | $ | 43,826 |  |  | $ | 47,419 |
In-place lease valuation (above market) - accumulated amortization | (27,703 | ) |  | (20,543 | )
In-place lease valuation (above market), net | 16,123 |  |  | 26,876 |
Ground leasehold interest (below market) | 2,255 |  |  | 2,254 |
Ground leasehold interest (below market) - accumulated amortization | (109 | ) |  | (82 | )
Ground leasehold interest (below market), net | 2,146 |  |  | 2,172 |
Intangible assets, net | $ | 18,269 |  |  | $ | 29,048 |
In-place lease valuation (below market) | $ | (49,774 | ) |  | $ | (51,966 | )
In-place lease valuation (below market) - accumulated amortization | 26,193 |  |  | 20,330 |
In-place lease valuation (below market), net | $ | (23,581 | ) |  | $ | (31,636 | )
Tenant origination and absorption cost | $ | 495,364 |  |  | $ | 541,646 |
Tenant origination and absorption cost - accumulated amortization | (242,601 | ) |  | (197,173 | )
Tenant origination and absorption cost, net | $ | 252,763 |  |  | $ | 344,473 |
Schedule of estimated annual amortization (income) expense | The following table sets forth the estimated annual amortization (income) expense for in-place lease valuation, net, tenant origination and absorption costs, ground leasehold improvements, and other leasing costs as of September 30, 2018 for the next five years:
Year |  | In-place lease valuation, net |  | Tenant origination and absorption costs |  | Ground leasehold improvements |  | Other leasing costs
Remaining 2018 |  | $ | (386 | ) |  | $ | 11,150 |  |  | $ | 21 |  |  | $ | 2,389 |
2019 |  | $ | (2,464 | ) |  | $ | 38,096 |  |  | $ | 21 |  |  | $ | 4,765 |
2020 |  | $ | (936 | ) |  | $ | 29,867 |  |  | $ | 21 |  |  | $ | 4,712 |
2021 |  | $ | (717 | ) |  | $ | 25,170 |  |  | $ | 21 |  |  | $ | 4,830 |
2022 |  | $ | (1,058 | ) |  | $ | 22,938 |  |  | $ | 21 |  |  | $ | 4,818 |
| The amortization of the intangible assets and other leasing costs for the respective periods is as follows:
| Amortization (income) expense for the year ended December 31,
| 2017 |  | 2016 |  | 2015
In-place lease valuation, net | $ | 1,689 |  |  | $ | 3,287 |  |  | $ | (3,785 | )
Tenant origination and absorption cost | $ | 59,046 |  |  | $ | 72,912 |  |  | $ | 69,099 |
Ground leasehold amortization (below market) | $ | 27 |  |  | $ | 28 |  |  | $ | 28 |
Other leasing costs amortization | $ | 1,527 |  |  | $ | 1,202 |  |  | $ | 301 |
Restrictions on cash and cash equivalents | In conjunction with acquisition of certain assets, as required by certain lease provisions or certain lenders in conjunction with an acquisition or debt financing, or credits received by the seller of certain assets, the Company assumed or funded reserves for specific property improvements and deferred maintenance, re-leasing costs, and taxes and insurance, which are included on the consolidated balance sheets as restricted cash. Additionally, an ongoing replacement reserve is funded by certain tenants pursuant to each tenant’s respective lease as follows:
| Balance as of
| September 30, 2018 |  | December 31, 2017
Cash reserves | $ | 20,619 |  |  | $ | 17,034 |
Midland mortgage loan restricted lockbox | 1,746 |  |  | 2,158 |
1031 Exchange Funds (1) | — |  |  | 154,940 |
Total | $ | 22,365 |  |  | $ | 174,132 |
(1) | Section 1031 of the Internal Revenue Code of 1986, as amended ("1031 Exchanges"). Represents cash proceeds from a disposition that are temporarily held at the qualified intermediary for purposes of facilitating potential Section 1031 Exchanges. The Company's three acquisitions during the six months ended June 30, 2018 completed the 1031 Exchange.
| Additionally, an ongoing replacement reserve is funded by certain tenants pursuant to each tenant’s respective lease as follows:
| Balance as of December 31, 2016 |  | Additions |  | Deductions |  | Balance as of December 31, 2017
Tenant improvement reserves (1) | $ | 9,238 |  |  | $ | 5,468 |  |  | $ | (1,071 | ) |  | $ | 13,635 |
Midland mortgage loan repairs reserves (2) | 67 |  |  | 323 |  |  | — |  |  | 390 |
Real estate tax reserve (3) | 1,645 |  |  | 3,344 |  |  | (2,892 | ) |  | 2,097 |
Property insurance reserve (Emporia Partners) (3) | 257 |  |  | 467 |  |  | (499 | ) |  | 225 |
Rent Abatement Reserve | — |  |  | 731 |  |  | (390 | ) |  | 341 |
Restricted deposits/Leasing commission reserve | 745 |  |  | 4 |  |  | (404 | ) |  | 345 |
Midland mortgage loan restricted lockbox (4) | 1,468 |  |  | 2,158 |  |  | (1,468 | ) |  | 2,158 |
Holdback Escrow (5) | — |  |  | 77,275 |  |  | (77,275 | ) |  | — |
1031 Exchange Funds (6) | — |  |  | 286,711 |  |  | (131,771 | ) |  | 154,940 |
Total | $ | 13,420 |  |  | $ | 376,481 |  |  | $ | (215,770 | ) |  | $ | 174,131 |
(1) | Represents tenant improvement reserves held by the lenders.
(2) | Represents a deferred maintenance reserve funded by the Company as part of the refinancing that occurred on February 28, 2013, whereby certain properties became collateral for the Midland mortgage loan.
(3) | Represents real estate tax and insurance reserves which are funded monthly and held by the lenders. Funds are requested for disbursement as real estate tax and insurance premium payments are made.
(4) | As part of the terms of the Midland mortgage loan, rent collections from the eight properties which serve as collateral thereunder are received in a designated cash collateral account which is controlled by the lender until the designated payment date, as defined in the loan agreement, and the excess cash is transferred to the operating account.
(5) | Represents initial funds held back related to the Bank of America Loan, which were released on October 25, 2017 and October 26, 2017.
(6) | Represents cash proceeds from a disposition that are temporarily held at the qualified intermediary for purposes of facilitating potential Section 1031 Exchanges.
Major components of assets and liabilities related to the real estate held for sale | The following summary presents the major components of assets and liabilities related to the real estate held for sale as of the nine months ended September 30, 2018 and year ended December 31, 2017:
|  | Balance as of
|  | September 30, 2018 |  | December 31, 2017
Land |  | $ | 589 |  |  | $ | 589 |
Building and improvements |  | 2,493 |  |  | 2,493 |
Tenant origination and absorption cost |  | 493 |  |  | 493 |
Total real estate |  | 3,575 |  |  | 3,575 |
Less: accumulated depreciation and amortization |  | (868 | ) |  | (794 | )
Total real estate, net |  | 2,707 |  |  | 2,781 |
Other assets |  | 4 |  |  | 178 |
Total assets |  | $ | 2,711 |  |  | $ | 2,959 |
Accrued expenses and other liabilities |  | $ | 288 |  |  | $ | 527 |
Due to affiliates |  | 5 |  |  | 10 |
Total liabilities |  | $ | 293 |  |  | $ | 537 |
Estimated annual amortization (income) expense, in-place lease valuation |  | The following table sets forth the estimated annual amortization (income) expense for in-place lease valuation, net, tenant origination and absorption costs, ground leasehold improvements, and other leasing costs as of December 31, 2017 for the next five years:
Year |  | In-place lease valuation, net |  | Tenant origination and absorption costs |  | Ground leasehold improvements |  | Other leasing costs
2018 |  | $ | (1,018 | ) |  | $ | 51,363 |  |  | $ | 27 |  |  | $ | 1,768 |
2019 |  | $ | (1,856 | ) |  | $ | 42,721 |  |  | $ | 27 |  |  | $ | 1,782 |
2020 |  | $ | (770 | ) |  | $ | 33,302 |  |  | $ | 27 |  |  | $ | 1,757 |
2021 |  | $ | (630 | ) |  | $ | 28,724 |  |  | $ | 27 |  |  | $ | 1,704 |
2022 |  | $ | (1,007 | ) |  | $ | 24,918 |  |  | $ | 27 |  |  | $ | 1,674 |

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