Real Estate - Future Minimum Contractual Rent Payments (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Schedule of future minimum net rent payments
Remaining 2018	$ 19,311
2018		$ 71,662
2019	78,887	78,887
2020	80,492	80,492
2021	72,677	72,677
2022	73,538	73,538
Thereafter	528,803	528,803
Total	853,708	906,059
Griffin Capital Essential Asset REIT, Inc. [Member]
Schedule of future minimum net rent payments
Remaining 2018	61,164
2018		231,620
2019	226,557	210,449
2020	204,640	188,653
2021	191,182	174,053
2022	182,708	164,494
Thereafter	803,849	664,226
Total	$ 1,670,100	$ 1,633,495

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Amount of required minimum rental payments for leases having an initial or remaining non-cancelable letter-terms in excess of one year.

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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

+ References

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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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Amount of required minimum rental payments for operating leases having an initial or remaining non-cancelable lease term in excess of one year due in the remainder of the fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date.

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