SHARE-BASED COMPENSATION AND SHAREHOLDERS' EQUITY (Detail Textuals 4) (Shareholder Rights Plan)	12 Months Ended
Dec. 31, 2012
Shareholder Rights Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of tender or exchange offer of outstanding common stock	20.00%
Percentage of shareholders entitle to purchase additional shares of common stock	20% or more

Description of percentage of ownership shareholders not entitled to purchase additional shares of common stock during an unsolicited takeover attempt.

No definition available.

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Namespace Prefix:	tgx_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration