Commitments Lease Disclosures (Details) (USD $)	12 Months Ended			1 Months Ended	3 Months Ended
	Mar. 31, 2015	Mar. 31, 2014	Mar. 31, 2013	Jan. 31, 2011 sqft	Mar. 31, 2015	Apr. 30, 2011	Sep. 01, 2014 sqft	Sep. 01, 2013 sqft	Nov. 01, 2012 sqft	Apr. 02, 2012 sqft	Feb. 01, 2015 sqft
Operating Leased Assets [Line Items]
Net rent expense	$ 2,900,000	$ 2,500,000	$ 2,700,000
State of Oregon | Notes payable | Leasehold improvements
Operating Leased Assets [Line Items]
Face amount of loan						500,000
Portland, Oregon | Office building
Operating Leased Assets [Line Items]
Period of lower occupancy expenses due to lease amendment (in years)				5 years
Tenant improvement allowance				800,000			200,000	200,000
Landlord reimbursement for tenant improvements	600,000				600,000
Square footage occupied				58,818			4,859	3,977
New York City | Office building
Operating Leased Assets [Line Items]
Tenant improvement allowance									600,000
Square footage occupied									12,200
Los Angeles | Office building
Operating Leased Assets [Line Items]
Square footage occupied										6,480
Vobile | Portland, Oregon | Office building
Operating Leased Assets [Line Items]
Square footage occupied											6,170
Vobile | Selling, general and administrative expenses | Portland, Oregon | Office building
Operating Leased Assets [Line Items]
Credit to rent expense					$ 21,000