Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Dec. 31, 2017	Dec. 31, 2016
Cash flows from operating activities:
Net (loss) income	$ 10,759	$ 54,059
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation, depletion and amortization	81,701	79,621
Amortization of debt discount and issuance costs	7,413	6,751
Non-cash employee stock compensation expense	4,395	6,443
Deferred tax expense (benefit)	28,958	(3,211)
Other	(158)	(4,638)
Changes in assets and liabilities:
Royalty receivables	(2,399)	(7,135)
Stream inventory	524	(689)
Income tax receivable	(5,197)	(52)
Prepaid expenses and other assets	(328)	(835)
Accounts payable	(1,658)	(1,832)
Income tax payable	9,445	(12,120)
Foreign withholding taxes payable	26	1,636
Uncertain tax positions	4,560	6,052
Other liabilities	9,193	822
Net cash provided by operating activities	147,234	124,872
Cash flows from investing activities:
Acquisition of stream and royalty interests		(192,818)
Other	(94)	1,774
Net cash used in investing activities	(94)	(191,044)
Cash flows from financing activities:
Borrowings from revolving credit facility		70,000
Repayment of revolving credit facility	(100,000)
Net payments from issuance of common stock	(3,541)	(2,320)
Common stock dividends	(31,391)	(30,035)
Purchase of additional royalty interest from non-controlling interest		(1,438)
Other	77	(2,680)
Net cash (used in) provided by financing activities	(134,855)	33,527
Net increase (decrease) in cash and equivalents	12,285	(32,645)
Cash and equivalents at beginning of period	85,847	116,633
Cash and equivalents at end of period	$ 98,132	$ 83,988