CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
OPERATING ACTIVITIES:
Net income	$ 60,291	$ 53,848	$ 45,049
Adjustments to reconcile net income to net cash provided by (used for) operating activities:
Depreciation	24,904	22,786	21,490
Amortization, including accretion and write-off of deferred financing costs	6,579	6,731	6,764
Deferred income taxes	5,586	2,552	(5,959)
Earnings of equity method investee	(1,578)	(2,038)	(1,636)
Gain on sale of fixed assets	(98)	333	(1,796)
Share-based compensation expense	6,191	5,632	7,265
Tax benefit related to share-based compensation expense	(1,289)	(1,584)	(858)
Gain on disposal of Non-core Products, net	(33,599)
Intangible impairment charge	0	202	0
Change in fair value of earn-out contingent consideration	2,308	213	7,485
Changes in operating assets and liabilities, net of effect of business combination:
Accounts receivable, net	(1,353)	(3,575)	(15,156)
Inventories, net	(15,653)	(10,002)	(2,132)
Prepaid expenses and other assets	(8,898)	2,291	(10,177)
Accounts payable	(6,980)	11,054	10,492
Accrued expenses and other liabilities	(11,906)	(7,671)	18,077
Net cash provided by operating activities	24,505	80,772	78,908
INVESTING ACTIVITIES:
Capital expenditures, including intangibles	(39,467)	(29,027)	(32,170)
Proceeds from sale of fixed assets	382	111	77
Insurance proceeds for fixed assets		1,403	711
Proceeds from disposal of Non-core Products	34,386
Business acquisitions, net of cash acquired			(77,258)
Investment in venture capital fund	(1,600)	(437)
Net cash provided by (used for) investing activities	(6,299)	(27,950)	(108,640)
FINANCING ACTIVITIES:
Acquisition of noncontrolling interest, including transaction costs			(1,848)
Revolving credit facility borrowings	112,000	27,500	95,000
Revolving credit facility payments	(82,000)	(52,500)	(41,000)
Proceeds from issuance of debt	2,208	415	2,748
Repayments of debt	(1,587)	(5,071)	(11,573)
Earn-out consideration cash payment	(3,394)
Other financing costs	(1,366)		(61)
Common Share repurchase program	(50,000)
Repurchase of Common Shares to satisfy employee tax withholding	(4,119)	(4,214)	(2,481)
Net cash used for financing activities	(28,258)	(33,870)	40,785
Effect of exchange rate changes on cash and cash equivalents	(1,637)	(3,863)	4,561
Net change in cash and cash equivalents	(11,689)	15,089	15,614
Cash and cash equivalents at beginning of period	81,092	66,003	50,389
Cash and cash equivalents at end of period	69,403	81,092	66,003
Supplemental disclosure of cash flow information:
Cash paid for interest	4,401	4,997	5,746
Cash paid for income taxes, net	$ 12,222	$ 13,213	$ 7,093