Annual report pursuant to Section 13 and 15(d)

DERIVATIVE INSTRUMENTS Narrative (Details)

v3.8.0.1
DERIVATIVE INSTRUMENTS Narrative (Details) - Interest Rate Swap
Dec. 31, 2011
interest_rate_derivative_held
Derivative [Line Items]  
Number of interest rate swaps held 2
Interest Rate Swap Agreement 1  
Derivative [Line Items]  
Fixed interest rate 1.29%
Interest Rate Swap Agreement 2  
Derivative [Line Items]  
Fixed interest rate 1.76%