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SALE OF COALOGIX (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Working capital escrow deposit		$ 347
Proceeds to buyers from the sale of 100% of CoaLogix		101,000
Sale of Stock, Percentage of Ownership before Transaction		65.00%
Proceeds from the sale of CoaLogix		61,915
Escrow deposit for indemnification claims		5,961
Release of escrow deposits	5,961	347	0
Total gain on sale of CoaLogix before taxes		46,974
Working capital adjustment		485
Tax expense on sale of CoaLogix		15,971
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate	34.00%	34.00%	34.00%
Net gain after tax on sale of CoaLogix		31,003
Tax benefit recorded with respect to gain on sale of CoaLogix		$ 14,571

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The domestic federal statutory tax rate applicable under enacted tax laws to the Company's pretax income from continuing operations for the period. The "statutory" tax rate is the regular tax rate if there are alternative tax systems.

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-Name Statement of Financial Accounting Standard (FAS)

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.



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