Commitments and Contingencies (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Future Minimum Lease Payments [Abstract]
2014	$ 977,000
2015	548,000
2016	213,000
2017	98,000
2018	6,000
Total	1,842,000
Rent expense under operating leases	1,100,000	1,100,000	1,200,000
Open purchase orders	11,600,000
Letters of credit outstanding	$ 300,000