CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Cash flows from operating activities:
Net income	$ 41,939	$ 51,254
Adjustments to reconcile net income to net cash flows from operating activities:
Depreciation and amortization	18,350	19,595
Non-cash lease expense	5,199	0
Share-based compensation	5,524	4,769
Deferred income taxes	501	(4,760)
Loss on disposals of plant and equipment	594	127
Foreign exchange (income)/expense	(84)	1,550
Changes in assets and liabilities, net of acquisitions:
Receivables	(46,371)	(40,812)
Inventory	(35,318)	(20,614)
Accounts payable and accrued expenses	18,637	(1,072)
Operating Leases	(5,195)	0
Income taxes	535	(703)
Income taxes-U.S. Tax Cuts and Jobs Act	0	(4,600)
Employee benefit plans	(50)	(1,718)
Other, net	(116)	2,153
Net cash flows from operating activities	4,145	5,169
Cash flows from investing activities:
Additions to property, plant, and equipment	(10,444)	(11,446)
Proceeds from sale of property, plant, and equipment	866	306
Cash paid for acquisitions, net of cash acquired	(6,728)	(8,428)
Other, net	8	199
Net cash flows from investing activities	(16,298)	(19,369)
Cash flows from financing activities:
Proceeds from issuance of debt	129,985	110,054
Repayment of debt	(113,171)	(72,721)
Proceeds from issuance of common stock	1,495	1,795
Purchases of common stock	(9,543)	(10,953)
Dividends paid	(13,510)	(10,658)
Purchase of redeemable noncontrolling shares	(485)	0
Net cash flows from financing activities	(5,229)	17,517
Effect of exchange rate changes on cash	(800)	(506)
Net change in cash and equivalents	(18,182)	2,811
Cash and equivalents at beginning of period	59,173	67,233
Cash and equivalents at end of period	40,991	70,044
Cash paid for income taxes, net of refunds	8,578	15,829
Cash paid for interest	4,731	5,354
Non-cash items:
Additions to property, plant, and equipment, not yet paid	307	0
Right-of-Use Assets obtained in exchange for new operating lease liabilities	1,772	0
NonCashDividendsNCI	642	0
Valley Farms Supply, Inc
Noncash or Part Noncash Acquisitions [Line Items]
Noncash or Part Noncash Acquisition, Payables Assumed	$ 0	$ 450