Consolidated Statement of Cash Flows Statement - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Cash Flows from Operating Activities:
Net Income	$ 41,110	$ 43,920
Adjustments to reconcile net income to net cash provided by operating activities, net of acquisition impact:
Loss on dispositions of assets	40	70
Depreciation	13,070	12,870
Amortization of intangible assets	9,970	9,740
Amortization of debt issue costs	560	740
Deferred income taxes	4,230	6,340
Non-cash compensation expense	3,040	2,620
Increase in receivables	(12,370)	(20,380)
Increase in inventories	(1,130)	(5,880)
Decrease in prepaid expenses and other assets	1,140	8,970
Decrease in accounts payable and accrued liabilities	(29,070)	(7,530)
Other operating activities	(1,310)	140
Net cash provided by operating activities, net of acquisition impact	29,280	51,620
Cash Flows from Investing Activities:
Capital expenditures	(12,310)	(11,320)
Acquisition of businesses, net of cash acquired	(67,030)	0
Net proceeds from disposition of property and equipment	30	250
Net cash used for investing activities	(79,310)	(11,070)
Cash Flows from Financing Activities:
Proceeds from borrowings on revolving credit facilities	93,220	59,060
Repayments of borrowings on revolving credit facilities	(92,410)	(68,490)
Shares surrendered upon exercise and vesting of equity awards to cover taxes	(3,230)	(2,380)
Payments to purchase common stock	(15,420)	(2,920)
Net cash used for financing activities	(17,840)	(14,730)
Increase (decrease) for the period	(67,870)	25,820
At beginning of period	108,150	27,580
At end of period	40,280	53,400
Supplemental disclosure of cash flow information:
Cash paid for interest	6,190	7,630
Cash paid for taxes	$ 11,970	$ 3,210