CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited) - USD ($) $ in Thousands	6 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Operating activities:
Net income	$ 3,821	$ 17,568
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	6,920	6,225
Amortization of debt issuance costs and debt discount	2,884	691
Provision for doubtful accounts	(73)	(49)
Non-cash stock compensation	3,718	3,206
Deferred income taxes	632	(184)
Environmental remediation charge	170
Earnings on equity investment in joint venture	(1,044)	(748)
Changes in assets and liabilities:
Trade accounts receivable	21,400	9,021
Other receivables	1,472	2,041
Inventory	(8,986)	(10,418)
Prepaid expenses and other current assets	(488)	(400)
Other assets	182	(11)
Accounts payable	(2,312)	2,649
Accrued expenses and other liabilities	(8,089)	(13,323)
Net cash provided by operating activities	20,207	16,268
Investing activities:
Payment for net assets of businesses acquired	(270,000)
Purchases of investments	(1,037)	(37)
Sales of investments		1,023
Payments for intangible assets	(2,872)	(9,850)
Purchases of property and equipment, net	(656)	(725)
Net cash used in investing activities	(274,565)	(9,589)
Financing activities:
Payment of cash dividends	(3,961)	(3,563)
Proceeds from exercise of stock options	510	384
Excess tax benefit on stock option exercises and restricted stock	569	1,030
Payment of contingent consideration		(1,500)
Proceeds from convertible senior notes		143,750
Payment for debt issuance costs		(5,153)
Proceeds from sold warrants		13,685
Purchase of call option (hedge)		(27,174)
Termination payment for interest rate swap		(420)
Borrowings of bank loans	265,000	15,500
Payment for deferred financing costs	(5,407)
Repayment of bank loans	(98)	(122,599)
Net cash provided by financing activities	256,613	13,940
Effect of exchange rate changes on cash	(1,075)	(290)
Net increase in cash	1,180	20,329
Cash and cash equivalents at beginning of period	66,828	34,020
Cash and cash equivalents at end of period	$ 68,008	$ 54,349