Commitments and Contingencies (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2012
2013-Capital	$ 89
2014-Capital	78
2015-Capital	72
2016-Capital	36
2017-Capital	7
Thereafter-Capital	0
Total future minimum lease payments	282
Less: amounts representing interest	(25)
Present value of minimum lease payments	257
2013-Operating	138
2014-Operating	98
2015-Operating	73
2016-Operating	4
2017-Operating	3
Thereafter-Operating	0
Total future minimum lease payments	$ 316

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