RESTATEMENT OF CONSOLIDATED FINANCIAL STATEMENTS Revised Consolidated Statements of Cash Flows (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2011 Scenario, Previously Reported [Member]	Dec. 31, 2011 Scenario, Actual [Member]	Dec. 31, 2011 Restatement Adjustment [Member]	Dec. 31, 2011 Other Adjustment [Member]	Dec. 31, 2011 Discontinued Operations [Member]
Net Cash Provided by (Used in) Financing Activities	$ (96,000)	$ 354,000		$ 2,026,000	$ 2,026,000	$ 0	$ 0	$ 0
Net Cash Provided by (Used in) Investing Activities	(11,536,000)	1,697,000		(11,870,000)	(12,192,000)	0	(322,000)	0
Payments to Acquire Property, Plant, and Equipment	(11,625,000)	(9,703,000)		(10,771,000)	(10,795,000)	0	(24,000)	0
Capitalized Computer Software, Additions	0	0		0	(1,242,000)	0	(1,242,000)	0
Loss (gain) on sales of assets	(125,000)	(252,000)		597,000	597,000	0	0	0
Gain on divestiture of consumer business	0	(37,972,000)			0
Net income	21,153,000	92,891,000	226,367,000	(23,791,000)	226,367,000	244,819,000	5,339,000	0
Depreciation, Depletion and Amortization	22,767,000	27,495,000		31,983,000	31,983,000	0	0	0
Provision for Doubtful Accounts	157,000	125,000		1,561,000	1,473,000	0	(88,000)	0
Increase (Decrease) in Restructuring Reserve	0	1,459,000		326,000	326,000	0	0	0
Gain (Loss) on Disposition of Property Plant Equipment, Excluding Oil and Gas Property and Timber Property				(24,000)	0	0	24,000	0
Share-based Compensation	6,917,000	11,432,000		14,619,000	12,609,000	0	(2,010,000)	0
Amortization of Financing Costs	294,000	294,000		301,000	301,000	0	0	0
Foreign Currency Transaction Gain (Loss), Unrealized	(10,000)	(1,251,000)		(135,000)	1,818,000	0	1,953,000	0
Increase (Decrease) in Deferred Income Taxes	730,000	(400,000)		(1,658,000)	(1,994,000)	0	(336,000)	0
Increase (Decrease) in Accounts Receivable	11,030,000	26,765,000		(4,904,000)	(3,804,000)	1,353,000	(253,000)	0
Change in other long-term assets	(36,000)	(40,000)		(1,099,000)	(155,000)	0	944,000	0
Increase (Decrease) in Inventories	9,021,000	20,844,000		(3,475,000)	(3,317,000)	0	158,000	0
Increase (Decrease) in Prepaid Expense and Other Assets	4,393,000	(3,745,000)		(298,000)	(223,000)	0	75,000	0
Increase (Decrease) in Accounts Payable	(1,416,000)	(7,111,000)		(4,769,000)	(4,533,000)	0	236,000	0
Increase (Decrease) in Accrued Liabilities	8,932,000	(3,300,000)		(14,323,000)	(17,436,000)	0	(3,113,000)	0
Increase (Decrease) in Income Taxes Payable	(1,324,000)	676,000		(757,000)	(640,000)	0	117,000	0
Increase (Decrease) in Deferred Revenue	(91,664,000)	(93,241,000)		5,611,000	(240,560,000)	(246,172,000)	1,000	0
Net Cash Provided by (Used in) Operating Activities	(9,145,000)	34,709,000		864,000	2,967,000	0	2,103,000	0
Proceeds from (Payments for) Other Financing Activities	177,000	1,022,000		2,026,000	3,239,000	0	1,213,000	0
Payments for Repurchase of Common Stock	(273,000)	(668,000)		0	(1,213,000)	0	(1,213,000)	0
Proceeds from Lines of Credit	0	14,000,000		21,000,000	21,000,000	0	0	0
Repayments of Lines of Credit	0	(14,000,000)		(21,000,000)	(21,000,000)	0	0	0
Effect of Exchange Rate on Cash and Cash Equivalents	(1,410,000)	775,000		(947,000)	(2,728,000)	0	(1,781,000)	0
Cash and Cash Equivalents, Period Increase (Decrease)	(22,187,000)	37,535,000		(9,927,000)	(9,927,000)	0	0	0
Cash and Cash Equivalents, at Carrying Value	48,203,000	70,390,000	32,855,000	32,855,000	32,855,000	0	0	0
Proceeds from Sale of Productive Assets	$ 0	$ 11,440,000			$ 0