Interim Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015
Operating Activities
Net income	$ 19,221	$ 17,069
Adjustment to reconcile net income to net cash provided by (used in) operating activities:
Provision for doubtful accounts	172	500
Depreciation	9,155	9,361
Amortization of intangibles	1,549	1,563
Amortization of debt issuance costs	106	106
Stock-based compensation expense	724	466
Excess tax benefits from stock-based payment arrangements	(141)	(39)
Provision for deferred income tax expense (benefit)	262	(858)
Gain on sale of property, plant and equipment	(239)	(83)
Changes in operating assets and liabilities, net of amounts acquired:
Accounts receivable	(20,149)	(22,152)
Inventories	(9,519)	(11,713)
Rental equipment	153	(14,496)
Prepaid expenses and other assets	(1,895)	(1,353)
Trade accounts payable and accrued liabilities	5,736	9,617
Income taxes payable	(193)	3,647
Other long-term liabilities	(83)	(394)
Net cash provided by (used in) operating activities	4,859	(8,759)
Investing Activities
Acquisitions, net of cash acquired	(188)	(3,465)
Purchase of property, plant and equipment	(6,191)	(5,101)
Proceeds from sale of property, plant and equipment	500	99
Net cash used in investing activities	(5,879)	(8,467)
Financing Activities
Borrowings on bank revolving credit facility	49,000	52,000
Repayments on bank revolving credit facility	(29,000)	(39,000)
Principal payments on long-term debt and capital leases	(10)	(19)
Proceeds from issuance of debt	918	0
Dividends paid	(2,051)	(1,808)
Proceeds from sale of common stock	998	1,939
Excess tax benefits from stock-based payment arrangements	141	39
Stock repurchased	(19)	0
Net cash provided by financing activities	19,977	13,151
Effect of exchange rate changes on cash and cash equivalents	(907)	(936)
Net change in cash and cash equivalents	18,050	(5,011)
Cash and cash equivalents at beginning of the period	26,922	39,533
Cash and cash equivalents at end of the period	44,972	34,522
Cash paid during the period for:
Interest	2,918	3,157
Income taxes	$ 11,725	$ 8,138