Commitments and Contingencies (Details) (USD $)	1 Months Ended	12 Months Ended			1 Months Ended
	Dec. 31, 2012 Option sqft Time Multiple	Dec. 31, 2013	Dec. 31, 2012 Time Multiple	Dec. 31, 2011	Dec. 31, 2012 Minimum	Dec. 31, 2012 Maximum	Dec. 31, 2013 Lease Guarantee	Sep. 01, 2011 Lease Guarantee
Operating Leased Assets [Line Items]
Rent expense		$ 7,900,000	$ 5,700,000	$ 6,200,000
Amount of square feet leased facility	61,460
Lease term	10 years
Period before option to terminate	5 years
Base rent	1,600,000
Percentage increase per year for base rent					3.00%	4.00%
Number of options to renew lease	2
Lease renewal period	5 years
Number of rights to terminate lease	1		1
Termination fee	2,300,000
Multiple of current monthly installment of base rent	12		12
Irrevocable letter of credit amount							6,600,000	3,500,000
Operating Leases, Future Minimum Payments Due, Rolling Maturity [Abstract]
Fiscal Year 2014		6,728,000
Fiscal Year 2015		5,642,000
Fiscal Year 2016		3,878,000
Fiscal Year 2017		3,627,000
Fiscal Year 2018		2,776,000
Thereafter		14,236,000
Total		36,887,000
Operating Leases, Rent Expense, Net [Abstract]
Sublease Income - Fiscal Year 2014		856,000
Sublease Income - Fiscal Year 2015		724,000
Sublease Income - Fiscal Year 2016		364,000
Sublease Income - Fiscal Year 2017		0
Sublease Income - Fiscal Year 2018		0
Sublease Income - Thereafter		0
Sublease Income - Total		1,944,000
Net Fiscal Year 2014		5,872,000
Net Fiscal Year 2015		4,918,000
Net Fiscal Year 2016		3,514,000
Net Fiscal Year 2017		3,627,000
Net Fiscal Year 2018		2,776,000
Net Thereafter		14,236,000
Net Total		$ 34,943,000