EMPLOYEE RETIREMENT PLANS (Detail Textuals 1) (Employees under executive deferred compensation plan, USD $)	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Maximum permissible percentage of compensation elected to defer	30.00%
Minimum
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Percentage of employer matching contributions	20.00%
Maximum
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Percentage of employer matching contributions	100.00%
Equity Securities
Deferred Compensation Arrangement with Individual, Share-based Payments [Line Items]
Contribution in employee-directed marketable equity securities	$ 837,000	$ 735,000