Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Revenues
Revenues	$ 220,390	$ 184,456	$ 436,229	$ 368,355
Expenses
Depreciation	67,474	60,227	136,465	121,911
Property transactions, net	14,426	10,587	18,512	17,442
Reimbursable expenses	32,907	20,642	61,267	41,129
Amortization of above market lease, net	172	172	343	343
Acquisition-related expenses	2,131	0	2,672	0
General and administrative	2,755	2,661	6,663	5,341
Expenses, net	119,865	94,289	225,922	186,166
Operating income	100,525	90,167	210,307	182,189
Non-operating income (expense)
Interest income	1,278	881	2,310	1,559
Interest expense	(49,276)	(44,818)	(98,506)	(89,454)
Other non-operating expenses	(3,205)	(1,178)	(5,389)	(1,312)
Non-operating income (expense)	(51,203)	(45,115)	(101,585)	(89,207)
Income before income taxes	49,322	45,052	108,722	92,982
Provision for income taxes	(1,263)	(1,177)	(2,494)	(2,415)
Net income	48,059	43,875	106,228	90,567
Less: Net (income) attributable to noncontrolling interest	(34,913)	(33,195)	(77,252)	(68,539)
MGP Operating Partnership
Revenues
Revenues	220,390	184,456	436,229	368,355
Expenses
Depreciation	67,474	60,227	136,465	121,911
Property transactions, net	14,426	10,587	18,512	17,442
Reimbursable expenses	32,907	20,642	61,267	41,129
Amortization of above market lease, net	172	172	343	343
Acquisition-related expenses	2,131	0	2,672	0
General and administrative	2,755	2,661	6,663	5,341
Expenses, net	119,865	94,289	225,922	186,166
Operating income	100,525	90,167	210,307	182,189
Non-operating income (expense)
Interest income	1,278	881	2,310	1,559
Interest expense	(49,276)	(44,818)	(98,506)	(89,454)
Other non-operating expenses	(3,205)	(1,178)	(5,389)	(1,312)
Non-operating income (expense)	(51,203)	(45,115)	(101,585)	(89,207)
Income before income taxes	49,322	45,052	108,722	92,982
Provision for income taxes	(1,263)	(1,177)	(2,494)	(2,415)
Net income	$ 48,059	$ 43,875	$ 106,228	$ 90,567
Weighted average Operating Partnership units outstanding:
Basic (in shares)	266,127,214	243,049,694	266,116,366	242,958,359
Diluted (in shares)	266,319,119	243,216,224	266,292,708	243,180,647
Net income per Operating Partnership unit (basic) (in dollars per share)	$ 0.18	$ 0.18	$ 0.40	$ 0.37
Net income per Operating Partnership unit (diluted) (in dollars per share)	0.18	0.18	0.40	0.37
Distributions declared per Operating Partnership unit (in dollars per share)	$ 0.43	$ 0.3950	$ 0.85	$ 0.7825
Class A Shares
Non-operating income (expense)
Net income attributable to Class A shareholders	$ 13,146	$ 10,680	$ 28,976	$ 22,028
Weighted average Class A shares outstanding:
Basic (in shares)	70,993,091	57,687,558	70,982,243	57,596,223
Diluted (in shares)	71,184,996	57,854,088	71,158,585	57,818,511
Net income per Class A share (basic) (in dollars per share)	$ 0.19	$ 0.19	$ 0.41	$ 0.38
Net income per Class A share (diluted) (in dollars per share)	0.18	0.18	0.41	0.38
Dividends declared per Class A share (in dollars per share)	$ 0.43	$ 0.3950	$ 0.85	$ 0.7825
Rental Properties
Revenues
Revenues	$ 186,563	$ 163,177	$ 373,126	$ 326,354
Rental Properties | MGP Operating Partnership
Revenues
Revenues	186,563	163,177	373,126	326,354
Tenant Reimbursements
Revenues
Revenues	33,827	21,279	63,103	42,001
Tenant Reimbursements | MGP Operating Partnership
Revenues
Revenues	$ 33,827	$ 21,279	$ 63,103	$ 42,001