Commitments and Contingencies (Details)	6 Months Ended
	Jun. 30, 2012
Number of Years Held Less Than One [Member]
Schedule of share redemption price
Redemption Price	No redemption allowed
Number of years held	Less than one
Number of Years Held One or More But Less Than Two [Member]
Schedule of share redemption price
Redemption Price	92.5% of redemption amount
Number of years held	One or more but less than two
Number of Years Held Two or More But Less Than Three [Member]
Schedule of share redemption price
Redemption Price	95.0% of redemption amount
Number of years held	Two or more but less than three
Number of Years Held Three or More But Less Than Four [Member]
Schedule of share redemption price
Redemption Price	97.5% of redemption amount
Number of years held	Three or more but less than four
Number of Years Held Four or More [Member]
Schedule of share redemption price
Redemption Price	100.0% of redemption amount
Number of years held	Four or more