SUBSEQUENT EVENT (Details) (USD $) In Millions, except Share data, unless otherwise specified			0 Months Ended		0 Months Ended
	Jun. 30, 2013	Dec. 31, 2012	Jul. 10, 2013 Subsequent event CPP Preferred Stock	Aug. 12, 2013 Subsequent event CPP Preferred Stock	Jul. 10, 2013 Subsequent event CPP Preferred Stock Forecast	Aug. 12, 2013 Subsequent event CPP Preferred Stock Forecast
SUBSEQUENT EVENT
Number of preferred stock intended to redeem (in shares)			15,100
Liquidation value to be used as purchase price, plus accrued or unpaid dividends earned (in dollars per share)				$ 1,000
Total cost of redeeming share (in dollars)					$ 15.3
Number of shares of CPP Preferred Stock outstanding following redemption	15,100	15,100				0