Consolidated Statement of Cash Flows Statement - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 48,490	$ 99,338
Adjustments to reconcile net income to net cash provided by operating activities:
Stock-based compensation	16,762	15,964
Depreciation and amortization	20,322	20,406
Changes to value of life insurance policies	(505)	2,190
Deferred income taxes	(3,910)	(3,445)
Other non-cash items	(1,226)	1,259
Changes in assets and liabilities:
Accounts receivable	37,610	43,775
Inventories	2,995	(138)
Prepaid expenses and other current assets	4,029	8,039
Other assets	(128)	2,061
Accounts payable	(3,023)	(10,864)
Accrued expenses	(13,017)	(8,582)
Increase (Decrease) in Deferred Revenue	(1,111)	2,909
Other long-term liabilities	1,396	(3,142)
Net cash provided by operating activities	108,684	169,770
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures	(7,740)	(18,276)
Patents and other intangibles	(205)	(1,502)
Business acquisition, net of cash acquired	(1,242)	(13,824)
Proceeds from sale of assets	705	1,193
Premiums on life insurance	(2,015)	(2,210)
Net cash used in investing activities	(10,497)	(34,619)
CASH FLOWS FROM FINANCING ACTIVITIES:
Repayment of debt borrowings	(290,226)	(49,693)
Proceeds from debt borrowings	63,000	120,000
Excess tax benefits from stock-based compensation	(187)	180
Debt financing costs	0	(339)
Non-controlling interest - dividend	(211)	0
Payments of Dividends	(70,883)	(70,933)
Repurchase of common shares	(2,157)	(139,255)
Proceeds from Issuance or Sale of Equity	197,202	0
Net cash used in financing activities	(103,462)	(140,040)
NET CHANGE IN CASH AND CASH EQUIVALENTS	(5,275)	(4,889)
CASH AND CASH EQUIVALENTS, beginning of period	22,494	23,350
CASH AND CASH EQUIVALENTS, end of period	$ 17,219	$ 18,461