SUBSEQUENT EVENTS (Details) (Restricted stock awards)	12 Months Ended	0 Months Ended
Dec. 31, 2010 Board of Directors	Dec. 31, 2009 Board of Directors	Dec. 31, 2010 Key employees	Dec. 31, 2009 Key employees	Feb. 08, 2013 Subsequent events 2007 Stock Incentive Plan and 2010 Stock Incentive Plan	Feb. 08, 2013 Subsequent events 2007 Stock Incentive Plan and 2010 Stock Incentive Plan Board of Directors	Feb. 08, 2013 Subsequent events 2007 Stock Incentive Plan and 2010 Stock Incentive Plan Key employees
SUBSEQUENT EVENTS
Grants in period (in shares)	25,446	40,818	25,000	935,000	302,056	22,056	280,000
Percent of awards or options that vest each year	33.00%	33.00%	33.00%			33.00%
Period over which options vest (in years)	3 years	3 years	3 years	4 years		3 years	3 years

The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 718

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (c)(2)(iii)(1)

-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 123R

-Paragraph A240

-Subparagraph b(2)(c)

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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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Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration