Interim Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Operating Activities
Net income	$ 15,253	$ 14,583
Adjustment to reconcile net income to net cash used in operating activities:
Provision for doubtful accounts	(24)	(94)
Depreciation - Property, plant and equipment	3,338	3,135
Depreciation - Rental equipment	2,088	1,405
Amortization of intangibles	855	881
Amortization of debt issuance costs	55	55
Stock-based compensation expense	627	458
Provision for deferred income tax expense	1,865	930
Gain on sale of property, plant and equipment	(180)	(17)
Changes in operating assets and liabilities, net of acquisitions:
Accounts receivable	(34,936)	(27,998)
Inventories	(17,098)	(12,291)
Rental equipment	(7,453)	(5,663)
Prepaid expenses and other assets	(1,472)	(1,765)
Trade accounts payable and accrued liabilities	1,563	(1,483)
Income taxes payable	2,925	(386)
Long-term tax payable	258	0
Other assets and long-term liabilities	(25)	104
Net cash used in operating activities	(32,361)	(28,146)
Investing Activities
Acquisitions, net of cash acquired	(50,477)	0
Purchase of property, plant and equipment	(5,284)	(7,645)
Proceeds from sale of property, plant and equipment	472	97
Net cash used in investing activities	(55,289)	(7,548)
Financing Activities
Borrowings on bank revolving credit facility	103,000	90,000
Repayments on bank revolving credit facility	(8,000)	(3,000)
Principal payments on finance leases	37	0
Dividends paid	(1,404)	(1,276)
Proceeds from exercise of stock options	237	266
Cost of common stock repurchased	(1,490)	0
Net cash provided by financing activities	92,306	85,990
Effect of exchange rate changes on cash and cash equivalents	324	181
Net change in cash and cash equivalents	4,980	50,477
Cash and cash equivalents at beginning of the year	34,043	25,373
Cash and cash equivalents at end of the period	39,023	75,850
Cash paid during the period for:
Interest	1,061	1,123
Income taxes	$ 2,814	$ 5,066