Interim Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Operating Activities
Net income	$ 18,470	$ 17,462
Adjustment to reconcile net income to net cash used in operating activities:
Provision for doubtful accounts	339	(113)
Depreciation - Property, plant and equipment	5,236	5,247
Depreciation - Rental equipment	1,890	2,207
Amortization of intangibles	3,887	3,658
Amortization of debt issuance	167	167
Stock-based compensation expense	1,371	1,240
Provision for deferred income tax (benefit)	2,797	(502)
Gain on sale of property, plant and equipment	(22)	(615)
Changes in operating assets and liabilities:
Accounts receivable	(58,231)	(34,239)
Inventories	(34,139)	(21,552)
Rental equipment	(1,227)	365
Prepaid expenses and other assets	(3,989)	(712)
Trade accounts payable and accrued liabilities	7,979	16,021
Income taxes payable	(382)	2,629
Long-term tax payable	0	454
Other assets and long-term liabilities, net	869	(318)
Net cash used in operating activities	(54,985)	(8,601)
Investing Activities
Purchase of property, plant and equipment	(4,358)	(3,477)
Proceeds from sale of property, plant and equipment	33	681
Net cash used in investing activities	(4,325)	(2,796)
Financing Activities
Borrowings on bank revolving credit facility	128,000	86,000
Repayments on bank revolving credit facility	(21,000)	(14,000)
Principal payments on long-term debt and finance leases	(3,763)	(3,766)
Dividends paid	(2,133)	(1,654)
Proceeds from exercise of stock options	474	1,072
Common stock repurchased	(390)	(296)
Net cash provided by financing activities	101,188	67,356
Effect of exchange rate changes on cash and cash equivalents	284	(889)
Net change in cash and cash equivalents	42,162	55,070
Cash and cash equivalents at beginning of the year	42,115	50,195
Cash and cash equivalents at end of the period	84,277	105,265
Cash paid during the period for:
Interest	2,619	2,557
Income taxes	$ 3,574	$ 2,758