NOTES PAYABLE TO BANKS (Detail Textuals 2) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2012
Line of Credit Facility [Line Items]
Debt-to-EBITDA ratio (in times)	2.5
EBITDA to interest expense ratio (in times)	2
Outstanding borrowings under the facility	$ 162.0
Remaining borrowing capcity	169.9
Letter of credit subfacility
Line of Credit Facility [Line Items]
Outstanding borrowings under the facility	$ 18.1