Leases (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2013
Operating Leased Assets [Line Items]
2014	$ 2,034
2015	2,082
2016	2,111
2017	2,104
2018	1,667
Thereafter	5,419
Total future minimum lease payments	$ 15,417
Minimum [Member]
Operating Leased Assets [Line Items]
Lease Expiration Date	Apr. 14, 2014
Maximum [Member]
Operating Leased Assets [Line Items]
Lease Expiration Date	Apr. 30, 2022