CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Cash flows from operating activities:
Net income	$ 21,215	$ 15,934
Adjustments to reconcile net income to net cash flows from operating activities:
Depreciation and amortization	9,896	8,924
Share-based compensation	3,326	2,941
Deferred income taxes	(5,417)	(1,483)
(Gain)/loss on disposals of plant and equipment	(396)	79
Foreign exchange (income)/expense	551	(475)
Changes in assets and liabilities, net of acquisitions
Receivables	(17,242)	(6,560)
Inventory	(23,932)	(29,661)
Accounts payable and accrued expenses	(15,378)	(10,539)
Income taxes	(2,463)	(2,002)
Employee benefit plans	(786)	(1,230)
Other, net	3,442	(499)
Net cash flows from operating activities	(27,184)	(24,571)
Cash flows from investing activities:
Additions to property, plant, and equipment	(5,921)	(4,908)
Proceeds from sale of property, plant, and equipment	208	34
Cash paid for acquisitions, net of cash acquired	(8,428)	0
Other, net	0	(7)
Net cash flows from investing activities	(14,141)	(4,881)
Cash flows from financing activities:
Proceeds from issuance of debt	59,561	20,383
Repayment of debt	(7,554)	(20,843)
Proceeds from issuance of common stock	642	481
Purchases of common stock	(7,949)	(665)
Dividends paid	(5,037)	(4,668)
Net cash flows from financing activities	39,663	(5,312)
Effect of exchange rate changes on cash	1,799	1,084
Net change in cash and equivalents	137	(33,680)
Cash and equivalents at beginning of period	67,233	104,331
Cash and equivalents at end of period	67,370	70,651
Cash paid for income taxes, net of refunds	6,029	4,165
Cash paid for interest	2,502	2,312
Non-cash items:
Additions to property, plant, and equipment, not yet paid	0	530
Bombas Leao S.A.
Noncash or Part Noncash Acquisitions [Line Items]
Noncash or Part Noncash Acquisition, Payables Assumed	0	24
Valley Farms Supply, Inc
Noncash or Part Noncash Acquisitions [Line Items]
Noncash or Part Noncash Acquisition, Payables Assumed	$ 450	$ 0