Commitments (Details 2) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Estimated aggregate minimum annual rental commitments
2013	$ 125
2014	113
2015	95
2016	58
Aggregate future minimum rentals receivable under non-cancelable leases	393
Total facility net operating lease revenue/expense	50	69
Total ATM lease expense	$ 941	$ 903