BORROWING ARRANGEMENTS (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Line of Credit Facility [Line Items]
Issuance cost for credit facility	$ 2,100,000
Long-term debt due after one year	7,010,000	5,602,000
Estimated repayment amount of Long-term debt obligations in 2015	9,600,000
Credit facility amount [Member]
Line of Credit Facility [Line Items]
Credit facility in December 2013	300,000,000
Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Maximum amount to be withdrawn	$ 250,000,000