Consolidated Statements of Operations and Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2019	Mar. 31, 2018
Consolidated Statements of Operations and Comprehensive Income (loss)
Revenue	$ 109,778	$ 115,983	$ 307,362	$ 342,807
Costs and expenses
Cost of sales	19,075	21,345	53,764	61,627
General and administrative	6,798	8,100	24,147	24,555
Production taxes	1,006	423	3,206	1,568
Exploration costs	330	536	5,534	5,098
Depreciation, depletion and amortization	39,368	39,679	120,726	121,380
Impairment of royalty interests		239,364		239,364
Total costs and expenses	66,577	309,447	207,377	453,592
Operating income (loss)	43,201	(193,464)	99,985	(110,785)
Fair value changes in equity securities	1,781		(3,318)
Interest and other income	499	1,781	1,089	3,416
Interest and other expense	(7,499)	(8,294)	(22,786)	(25,946)
Income (loss) before income taxes	37,982	(199,977)	74,970	(133,315)
Income tax (expense) benefit	(9,388)	45,859	(11,355)	(10,044)
Net income (loss)	28,594	(154,118)	63,615	(143,359)
Net loss attributable to non-controlling interests	178	468	3,753	3,573
Net income (loss) attributable to Royal Gold common stockholders	28,772	(153,650)	67,368	(139,786)
Net income (loss)	28,594	(154,118)	63,615	(143,359)
Adjustments to comprehensive income (loss), net of tax
Unrealized change in market value of available-for-sale securities		(666)		(858)
Comprehensive income (loss)	28,594	(154,784)	63,615	(144,217)
Comprehensive loss attributable to non-controlling interests	178	468	3,753	3,573
Comprehensive income (loss) attributable to Royal Gold stockholders	$ 28,772	$ (154,316)	$ 67,368	$ (140,644)
Net income (loss) per share available to Royal Gold common stockholders:
Basic earnings (loss) per share (in dollars per share)	$ 0.44	$ (2.35)	$ 1.03	$ (2.14)
Basic weighted average shares outstanding (in shares)	65,398,369	65,307,324	65,389,499	65,283,019
Diluted earnings (loss) per share (in dollars per share)	$ 0.44	$ (2.35)	$ 1.03	$ (2.14)
Diluted weighted average shares outstanding (in shares)	65,515,234	65,307,324	65,494,902	65,283,019
Cash dividends declared per common share (in dollars per share)	$ 0.265	$ 0.25	$ 0.78	$ 0.74

The charge against earnings in the period to reduce the carrying amount of royalty interests.

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Exploration expenses (including prospecting) related to oil and gas producing entities and would be included in operating expenses of that entity. Costs incurred in identifying areas that may warrant examination and in examining specific areas that are considered to have prospects of containing oil and gas reserves, including costs of drilling exploratory wells and exploratory-type stratigraphic test wells. Exploration costs may be incurred both before acquiring the related property (sometimes referred to in part as prospecting costs) and after acquiring the property. Principal types of exploration costs, which include depreciation and applicable operating costs of support equipment and facilities and other costs of exploration activities, are: (i) Costs of topographical, geographical and geophysical studies, rights of access to properties to conduct those studies, and salaries and other expenses of geologists, geophysical crews, and others conducting those studies. Collectively, these are sometimes referred to as geological and geophysical or "G&G" costs. (ii) Costs of carrying and retaining undeveloped properties, such as delay rentals, ad valorem taxes on properties, legal costs for title defense, and the maintenance of land and lease records. (iii) Dry hole contributions and bottom hole contributions. (iv) Costs of drilling and equipping exploratory wells. (v) Costs of drilling exploratory-type stratigraphic test wells.

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