Consolidated Statement of Cash Flows Statement - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income (loss)	$ 99,338	$ 191,899
Adjustments to reconcile net income to net cash provided by operating activities:
Stock-based compensation	15,964	15,497
Depreciation and amortization	20,406	19,796
(Increase) decrease in value of life insurance policies	2,190	(724)
Deferred income taxes	(3,445)	(190)
Other non-cash items	1,259	1,069
Changes in assets and liabilities:
Accounts receivable	43,775	(959)
Inventories	(138)	(3,053)
Prepaid expenses and other current assets	8,039	(7,041)
Other assets	2,061	1,529
Accounts payable	(10,864)	(2,171)
Accrued expenses	(8,582)	(10,604)
Increase (Decrease) in Deferred Revenue	2,909	158
Other long-term liabilities	(3,142)	453
Net cash provided by operating activities	169,770	205,659
CASH FLOWS FROM INVESTING ACTIVITIES:
Capital expenditures	(18,276)	(27,624)
Patents and other intangibles	(1,502)	(753)
Business acquisition, net of cash acquired	(13,824)	(1,200)
Proceeds from sale of assets	1,193	1,098
Premiums on life insurance	(2,210)	(3,482)
Net cash used in investing activities	(34,619)	(31,961)
CASH FLOWS FROM FINANCING ACTIVITIES:
Repayment of debt borrowings	(49,693)	(57,157)
Proceeds from debt borrowings	120,000	160,000
Excess tax benefits from stock-based compensation	180	2,680
Debt financing costs	(339)	(1,054)
Non-controlling interest - dividend	0	(393)
Payments of Dividends	70,933	67,153
Repurchase of common shares	(139,255)	(210,402)
Net cash used in financing activities	(140,040)	(173,479)
NET CHANGE IN CASH AND CASH EQUIVALENTS	(4,889)	219
CASH AND CASH EQUIVALENTS, beginning of period	23,350	25,088
CASH AND CASH EQUIVALENTS, end of period	$ 18,461	$ 25,307