NOTES PAYABLE TO BANKS (Detail Textuals 2) $ in Millions	6 Months Ended
	Jun. 30, 2015 USD ($)	Dec. 31, 2014 USD ($)
Line of Credit Facility [Line Items]
Threshold limit of ratio of debt to earnings before interest taxes depreciation and amortization	no more than 2.5 to 1
Debt-to-EBITDA ratio (in times)	2.5
Threshold limit of ratio of earnings before interest taxes depreciation and amortization to interest expenses	no less than 2 to 1
EBITDA to interest expense ratio (in times)	2
Revolving credit facility
Line of Credit Facility [Line Items]
Outstanding borrowings under the facility	$ 54.9	$ 224.5
Remaining borrowing capacity	265.8
Letter of credit subfacility
Line of Credit Facility [Line Items]
Outstanding borrowings under the facility	$ 29.3