Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Cash flows from operating activities:
Net (loss) income	$ (100,521)	$ 37,707
Adjustments to reconcile net (loss) income to net cash provided by operating activities:
Depreciation, depletion and amortization	105,717	67,273
Non-cash employee stock compensation expense	7,789	3,660
Impairments of royalty and stream interests and royalty receivables	98,588	31,335
Amortization of debt discount	8,142	7,624
Gain on sale of available-for-sale securities	(675)
Deferred tax benefit	(17,246)	(34,199)
Tax expense (benefit) of stock-based compensation exercises	247	(74)
Other	(390)
Changes in assets and liabilities:
Royalty receivables	14,976	4,172
Income taxes receivable	(2,996)	25,191
Stream inventory	(3,115)	434
Prepaid expenses and other assets	1,630	4,037
Accounts payable	(1,533)	(1,742)
Uncertain tax positions	1,950	1,736
Other liabilities	8,084	1,040
Net cash provided by operating activities	120,647	148,194
Cash flows from investing activities:
Acquisition of royalty and stream interests	(1,326,256)	(60,341)
Andacollo royalty termination	345,000
Golden Star term loan	(20,000)
Proceeds from sale of available-for-sale securities	6,933
Tulsequah stream termination		10,000
Other	(302)	(71)
Net cash used in investing activities	(994,625)	(50,412)
Cash flows from financing activities:
Borrowings from revolving credit facility	350,000
Repayment of revolving credit facility	(50,000)
Common stock dividends	(43,709)	(41,712)
Debt issuance costs	(1,049)
Distribution to non-controlling interests	(829)	(1,227)
Net (payments) proceeds from issuance of common stock	(174)	775
Tax (benefit) expense of stock-based compensation exercises	(247)	74
Net cash provided by (used in) financing activities	253,992	(42,090)
Net (decrease) increase in cash and equivalents	(619,986)	55,692
Cash and equivalents at beginning of period	742,849	659,536
Cash and equivalents at end of period	$ 122,863	$ 715,228