Organization and Summary of Significant Accounting Policies Property and Equipment and Software Development Costs (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 75,682,000	$ 67,209,000
Capitalized Computer Software, Additions	7,800,000	5,000,000
Capitalized Computer Software, Amortization	3,200,000	2,300,000	1,600,000
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	7,394,000	6,992,000
Furniture and Fixtures [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	5,260,000	5,126,000
Equipment [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	40,180,000	32,528,000
Equipment [Member] | Minimum [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Useful Life	5 years
Internal Use Software [Member]
Property, Plant and Equipment [Line Items]
Property and equipment, gross	$ 4,800,000	$ 5,400,000