CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Cash flows from operating activities:
Net income	$ 38,656	$ 37,459
Adjustments to reconcile net income to net cash used in operating activities:
Depreciation and amortization	7,113	6,718
Provision for doubtful accounts	231	39
Noncash stock compensation	706	590
Deferred tax benefit	(2,556)	(508)
Change in fair value of derivatives	314	670
Changes in:
Accounts receivable	(48,735)	(44,778)
Inventories	(4,979)	(10,737)
Other assets	71	(2,106)
Accounts payable and accrued expenses	(7,784)	(6,189)
Income taxes, net	4,391	6,346
Net cash used in operating activities	(12,572)	(12,496)
Cash flows from investing activities:
Purchases of short-term investments	(48,629)	(56,216)
Proceeds from sale of short-term investments	15,621	141,009
Purchases of equipment and leasehold improvements	(4,260)	(2,500)
Payment for intangible assets acquired	(642)	(119,541)
Net cash used in investing activities	(37,910)	(37,248)
Cash flows from financing activities:
Proceeds from issuance of long-term debt	0	111,440
Repayments of long-term debt	(16,567)	(6,404)
Proceeds from exercise of options	1,235	451
Proceeds from sale of stock of subsidiary	1,449	690
Dividends paid	(13,349)	(11,775)
Dividends paid to noncontrolling interest	(4,863)	(3,836)
Purchase of stock of subsidiary	(2,470)	0
Net cash provided by (used in) financing activities	(34,565)	90,566
Effect of exchange rate changes on cash	4,032	(6,431)
Net increase (decrease) in cash and cash equivalents	(81,015)	34,391
Cash and cash equivalents - beginning of period	176,967	90,138
Cash and cash equivalents - end of period	95,952	124,529
Cash paid for:
Interest	1,758	1,688
Income taxes	$ 18,881	$ 16,692