Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Operating Activities
Net income	$ 115,930	$ 136,161	$ 101,928
Adjustments to reconcile net income to cash provided by operating activities:
Provision for doubtful accounts	1,718	253	424
Depreciation - PP&E	26,865	23,665	23,673
Depreciation - Rental	9,992	8,789	7,739
Amortization of intangibles	16,227	15,519	15,277
Amortization of debt issuance	703	703	667
Stock-based compensation expense	9,141	7,424	5,561
Provision for deferred income tax benefit	(3,607)	(4,253)	(2,337)
Gain on sale of property, plant and equipment	(639)	(6,621)	(161)
Changes in operating assets and liabilities, net of acquisitions:
Accounts receivable	47,012	(35,293)	(85,055)
Inventories	26,494	(10,844)	(37,739)
Rental equipment	(23,830)	(13,930)	(9,196)
Prepaid expenses and other	(2,608)	(835)	(6,146)
Trade accounts payable and accrued liabilities	(15,673)	4,813	(2,879)
Income taxes payable	1,000	6,705	2,934
Long term tax payable	(2,007)	(1,147)	(635)
Other assets and liabilities, net	3,060	45	475
Net cash provided by operating activities	209,778	131,154	14,530
Investing Activities
Acquisitions, net of cash acquired	0	(27,560)	(2,000)
Purchase of property, plant and equipment	(24,993)	(37,745)	(31,141)
Proceeds from sale of property, plant and equipment	3,045	12,682	1,566
Purchase of patents	(233)	0	(163)
Net cash used in investing activities	(22,181)	(52,623)	(31,738)
Financing Activities
Borrowings on bank revolving credit facility	195,000	183,000	222,000
Repayment on bank revolving credit facility	(195,000)	(235,000)	(174,000)
Principal payments on long-term debt and capital leases	(15,069)	(14,948)	(15,031)
Contingent consideration payment after acquisition	(4,402)	0	0
Dividends paid	(12,442)	(10,485)	(8,549)
Proceeds from exercise of stock options	1,912	1,586	803
Common stock repurchased	(1,972)	(1,034)	(768)
Net cash (used in) provided by financing activities	(31,973)	(76,881)	24,455
Effect of exchange rate changes on cash	(10,269)	3,253	(2,346)
Net change in cash and cash equivalents	145,355	4,903	4,901
Cash and cash equivalents at beginning of the year	51,919	47,016	42,115
Cash and cash equivalents at end of the year	197,274	51,919	47,016
Cash paid during the year for:
Interest	20,787	25,358	14,575
Income taxes	$ 40,426	$ 37,330	$ 35,102