CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017
CASH FLOWS FROM OPERATING ACTIVITIES
Net earnings	$ 48,713	$ 47,513
Adjustments to reconcile net earnings to cash provided by operating activities:
Depreciation	19,021	16,137
Amortization expense (including deferred financing fees)	7,088	2,966
Loss on extinguishment of debt	1,445	0
Change in fair value of acquisition related contingent consideration	(350)	0
Provision for inventory obsolescence	1,660	1,436
Loss on disposal of property, plant and equipment	32	83
Unrealized foreign currency losses	375	1,370
Stock-based compensation	6,738	7,314
Bad debt and customer claims	(589)	(1,403)
Changes in assets and liabilities:
Customer receivables	(14,706)	(5,789)
Inventories	(16,174)	(7,611)
Prepaid and other current assets	16,551	5,491
Accounts payable	6,171	9,502
Current and deferred income taxes	(4,815)	(1,388)
Other current liabilities	711	(7,250)
Other noncurrent assets and liabilities	(8,076)	(8,967)
Cash provided by operating activities	63,795	59,404
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(21,349)	(29,433)
Purchase of businesses, net of cash acquired	(307,983)	0
Cash used in investing activities	(329,332)	(29,433)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from revolving credit facility	409,000	304,000
Repayment of revolving credit facility	(287,500)	(296,500)
Proceeds from term loan	395,136	0
Repayment of term loan	(224,149)	(7,500)
Payment of financing fees	(4,578)	0
Payment of fees related to debt extinguishment	(1,023)	0
Payment of dividends	(22,727)	(23,000)
Proceeds from the issuance of common stock	51	576
Purchase of common stock for treasury	(4,393)	(10,570)
Contingent purchase price payment	0	(6,000)
Cash provided by (used in) financing activities	259,817	(38,994)
Effect of exchange rate changes on cash and cash equivalents	10,834	5,002
Net increase (decrease) in cash and cash equivalents	5,114	(4,021)
Cash and cash equivalents at beginning of period	2,203	9,854
Cash and cash equivalents at end of period	$ 7,317	$ 5,833