Consolidated Statement of Cash Flows Statement - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Cash Flows from Operating Activities:
Net Income	$ 19,090	$ 24,320
Adjustments to reconcile net income to net cash provided by operating activities, net of acquisition impact:
Gain (loss) on dispositions of assets	50	(10)
Depreciation	6,230	6,330
Amortization of intangible assets	4,930	4,910
Amortization of debt issue costs	280	470
Deferred income taxes	2,300	5,010
Non-cash compensation expense	1,320	1,220
Increase in receivables	(11,490)	(16,160)
Increase in inventories	(4,770)	(840)
(increase) decrease in prepaid expenses and other assets	(50)	5,330
Decrease in accounts payable and accrued liabilities	(10,010)	(15,140)
Other operating activities	200	800
Net cash provided by operating activities, net of acquisition impact	8,080	16,240
Cash Flows from Investing Activities:
Capital expenditures	(6,640)	(3,170)
Acquisition of businesses, net of cash acquired	(22,270)	0
Net proceeds from disposition of property and equipment	0	250
Net cash used for investing activities	(28,910)	(2,920)
Cash Flows from Financing Activities:
Proceeds from borrowings on revolving credit facilities	26,250	32,040
Repayments of borrowings on revolving credit facilities	(25,870)	(33,970)
Shares surrendered upon exercise and vesting of equity awards to cover taxes	(2,620)	(2,300)
Payments to purchase common stock	(670)	0
Net cash used for financing activities	(2,910)	(4,230)
Increase (decrease) for the period	(23,740)	9,090
At beginning of period	108,150	27,580
At end of period	84,410	36,670
Supplemental disclosure of cash flow information:
Cash paid for interest	300	470
Cash paid for taxes	$ 1,870	$ 970