Consolidated Statement of Cash Flows Statement - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Cash Flows from Operating Activities:
Net Income	$ 34,970	$ 27,560
Adjustments to reconcile net income to net cash provided by operating activities:
Loss on dispositions of assets	(3,210)	(1,350)
Depreciation	18,890	17,710
Amortization of intangible assets	14,920	15,330
Amortization of debt issue costs	1,030	1,000
Deferred income taxes	2,420	360
Non-cash compensation expense	5,090	5,240
Tax effect from stock based compensation	0	(640)
Debt financing and related expenses	6,640	0
Increase in receivables	(12,700)	(9,790)
Increase in inventories	(580)	(4,560)
Decrease in prepaid expenses and other assets	7,110	10,780
Decrease in accounts payable and accrued liabilities	(8,590)	(17,150)
Other operating activities	240	(780)
Net cash provided by operating activities	72,650	46,410
Cash Flows from Investing Activities:
Capital expenditures	(24,120)	(22,390)
Net proceeds from disposition of property and equipment	1,800	120
Net cash used for investing activities	(22,320)	(22,270)
Cash Flows from Financing Activities:
Proceeds from issuance of senior notes	300,000	0
Repayments of borrowings on term loan facilities	(257,940)	(10,380)
Proceeds from borrowings on revolving credit and accounts receivable facilities	353,710	314,860
Repayments of borrowings on revolving credit and accounts receivable facilities	(435,250)	(324,780)
Debt financing fees	(6,070)	0
Shares surrendered upon options and restricted stock vesting to cover taxes	(480)	(1,500)
Other financing activities	(250)	760
Net cash used for financing activities	(46,280)	(21,040)
Net increase for the period	4,050	3,100
At beginning of period	20,710	19,450
At end of period	24,760	22,550
Supplemental disclosure of cash flow information:
Cash paid for interest	9,020	8,870
Cash paid for taxes	$ 13,140	$ 9,130