Commitments and Contingencies (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012
Future minimum lease payments under the operating leases
Future minimum lease payments 2013	$ 1,464
Future minimum lease payments 2014	1,449
Future minimum lease payments 2015	1,470
Future minimum lease payments 2016	1,517
Future minimum lease payments 2017	1,564
Future minimum lease payments thereafter	2,567
Future minimum lease payments, Total	10,031
Subtenant offset to future minimum lease payments,2013	139
Subtenant offset to future minimum lease payments, Total	139
Net future minimum lease payments 2013	1,325
Net future minimum lease payments 2014	1,449
Net future minimum lease payments 2015	1,470
Net future minimum lease payments 2016	1,517
Net future minimum lease payments 2017	1,564
Net future minimum lease payments thereafter	2,567
Net future minimum lease payments, Total	$ 9,892