UNAUDITED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Cash flows from operating activities:
Net income	$ 39,142	$ 43,613
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	19,090	13,947
Provision for doubtful accounts	10	(74)
Share-based compensation expense	11,029	12,416
Deferred income tax expense	516	3,191
Non-cash foreign exchange (gain) loss	(539)	646
(Gain) loss on disposal of property, plant and equipment	107	(121)
Impairment of long-lived assets	79	0
Other	657	(779)
Changes in operating assets and liabilities:
Accounts receivable	(1,110)	8,378
Inventories	655	(5,156)
Prepaid expenses and other assets	(144)	(7,487)
Accounts payable	(2,945)	1,493
Accrued expenses, income taxes payable and other liabilities	(8,790)	3,788
Net cash provided by operating activities	57,757	73,855
Cash flows from investing activities:
Additions to property, plant and equipment	(13,836)	(8,948)
Proceeds from the sale of property, plant and equipment	17	201
Proceeds from sale of investments	200	202
Acquisition of business, net of cash acquired	(126,976)	0
Net cash used in investing activities	(140,595)	(8,545)
Cash flows from financing activities:
Repayment of long-term debt	(6,563)	(6,563)
Repurchases of common stock	(27,855)	(42,246)
Net proceeds from issuance of stock	5,646	34,256
Dividends paid	(4,326)	0
Tax benefits associated with share-based compensation expense	770	6,185
Net cash used in financing activities	(32,328)	(8,368)
Effect of exchange rate changes on cash	4,063	(2,404)
Increase (decrease) in cash and cash equivalents	(111,103)	54,538
Cash and cash equivalents at beginning of period	354,190	284,155
Cash and cash equivalents at end of period	243,087	338,693
Supplemental disclosure of non-cash investing and financing activities:
Purchases of property, plant and equipment in accrued liabilities and accounts payable at the end of the period	$ 701	$ 1,422