Derivative Instruments (Details 1) (Parenthetical)	3 Months Ended
Mar. 31, 2014
Derivatives Fair Value [Line Items]
Federal Funds rate	0.50%
Eurodollar Libor Rate
Derivatives Fair Value [Line Items]
Federal Funds rate	0.50%
Minimum
Derivatives Fair Value [Line Items]
Spread ranging	0.75%
Maximum
Derivatives Fair Value [Line Items]
Spread ranging	2.75%

Description of the interest rate as being variable and identification of the Federal funds index as the rate on which the interest is based and the number of points or percentage added to that index or rate to set the rate.

No definition available.

Name:	escr_FederalFundRate
Namespace Prefix:	escr_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration