CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
CASH FLOWS FROM OPERATING ACTIVITIES
Net earnings	$ 15,267	$ 15,396
Adjustments to reconcile net earnings to cash provided by operating activities:
Depreciation	6,254	5,089
Amortization expense (including deferred financing fees)	2,189	989
Loss on extinguishment of debt	1,445	0
Inventory obsolescence	497	744
Loss on disposal of property, plant and equipment	4	25
Unrealized foreign currency (gains)	(1,954)	(12)
Stock-based compensation	2,426	3,344
Bad debt and customer claims	386	(9)
Changes in assets and liabilities:
Customer receivables	(6,248)	1,376
Inventories	(9,619)	(4,765)
Prepaid and other current assets	2,969	1,456
Accounts payable	(168)	(5,105)
Current and deferred income taxes	1,873	2,447
Other current liabilities	(4,220)	(13,895)
Other noncurrent assets and liabilities	(5,500)	(3,255)
Cash provided by operating activities	5,601	3,825
CASH FLOWS FROM INVESTING ACTIVITIES
Capital expenditures	(8,468)	(10,650)
Purchase of business, net of cash acquired	(303,748)	0
Cash used in investing activities	(312,216)	(10,650)
CASH FLOWS FROM FINANCING ACTIVITIES
Proceeds from revolving credit facility	282,000	130,000
Repayment of revolving credit facility	(132,000)	(103,500)
Proceeds from term loan	350,458	0
Repayment of term loan	(165,000)	(2,500)
Payment of financing fees	(4,509)	0
Loss on debt extinguishment	1,023	0
Payment of dividends	(7,656)	(8,427)
Proceeds from the issuance of common stock	27	526
Purchase of common stock for treasury	(1,952)	(10,348)
Contingent purchase price payment	0	(6,000)
Cash provided by (used in) financing activities	320,345	(249)
Effect of exchange rate changes on cash and cash equivalents	221	255
Net increase (decrease) in cash and cash equivalents	13,951	(6,819)
Cash and cash equivalents at beginning of period	2,203	9,854
Cash and cash equivalents at end of period	$ 16,154	$ 3,035