Statement of Cash Flows $ in Thousands	12 Months Ended
	Dec. 31, 2015 USD ($)	Dec. 31, 2014 USD ($)	Dec. 31, 2013 USD ($)
CASH FLOWS FROM OPERATING ACTIVITIES:
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest	$ 114,932	$ 258,626	$ 243,194
Adjustments to reconcile income to net cash provided by operating activities:
Share-based Compensation	21,279	20,470	20,526
Depreciation and amortization	27,457	26,696	25,471
Debt issuance costs amortization and finance charges	702	445	480
(Increase) decrease in value of life insurance policies	909	(1,581)	(5,112)
Deferred Income Tax Expense (Benefit)	(107)	4,682	6,790
Asset Impairment Charges	5,199	0	0
Provision for Doubtful Accounts	2,592	1,243	(236)
Other Noncash Income (Expense)	(860)	(466)	473
Changes in assets and liabilities, net of effects of acquisitions:
Accounts receivable	49,261	3,486	(16,312)
Inventories	3,049	2,894	1,291
Prepaid expenses and other current assets	7,744	(10,088)	13,915
Other assets	2,652	680	(867)
Accounts payable	(13,353)	(3,021)	(6,339)
Accrued expenses	(9,723)	(2,611)	5,979
Other long-term liabilities	4,275	1,873	11,865
Increase (Decrease) in Deferred Revenue	3,092	121	(2,981)
Net cash provided by operating activities	219,100	303,449	298,137
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures	(22,797)	(36,586)	(35,416)
Patents and other intangibles	(1,460)	(854)	(3,530)
Acquisitions, net of cash acquired	(13,774)	(1,200)	0
Payments for (Proceeds from) Investments	0	0	(98)
Proceeds from sale of assets	1,320	884	1,036
Proceeds from insurance recovery	0	0	1,385
Premiums on life insurance	(2,943)	(4,310)	(6,575)
Net cash used in investing activities	(39,654)	(42,066)	(43,198)
CASH FLOWS FROM FINANCING ACTIVITIES:
Repayment of debt borrowings	(139,656)	(128,162)	(134,046)
Proceeds from debt borrowings	215,000	217,000	167,000
Stock options exercised	0	0	83
Excess tax benefits from stock-based payments	(175)	3,020	3,744
Debt financing costs	(387)	(1,128)	0
Non-controlling interest - dividend	(1,140)	(394)	0
Dividends paid	(94,235)	(89,089)	(58,642)
Repurchase of common shares	(159,709)	(264,368)	(227,216)
Net cash used in financing activities	(180,302)	(263,121)	(249,077)
NET CHANGE IN CASH AND CASH EQUIVALENTS	(856)	(1,738)	5,862
Cash and Cash Equivalents, at Carrying Value	22,494	23,350	25,088
Cash payments for interest	12,313	10,272	8,869
Cash payments for income taxes	35,523	79,644	57,001
Non-cash investing and financing activities:
Financed capital expenditures	483	1,009	5,797
Insurance premium financed	$ 2,228	$ 0	$ 0