Commitments and Contingencies (Details)	1 Months Ended	12 Months Ended
	Dec. 31, 2015 USD ($)	Dec. 31, 2018 USD ($) period company	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)	Mar. 06, 2017 claim
Operating Leases, Future Minimum Payments Due, Fiscal Year Maturity [Abstract]
2019		$ 11,208,000
2020		1,937,000
2021		1,863,000
2022		1,793,000
2023		1,465,000
Thereafter		25,446,000
Total operating lease future minimum payments		43,712,000
Rent expense		$ 2,908,000	$ 2,869,000	$ 2,613,000
Sublease term		5 years
Notice required from lessee for early termination of lease		180 days
Fee required of lessee for early termination of lease		$ 150,000
Sublease rental income		0	406,000	369,000
Unrecorded Unconditional Purchase Obligation [Line Items]
2019		9,108,000
2020		9,097,000
2021		7,289,000
2022		6,393,000
2023		75,000
Thereafter		0
Unconditional purchase obligation		31,962,000
Number of class action lawsuits | claim					2
Purchase Obligations
Unrecorded Unconditional Purchase Obligation [Line Items]
2019		7,278,000
2020		7,864,000
2021		6,777,000
2022		5,875,000
2023		0
Thereafter		0
Unconditional purchase obligation		27,794,000
Sponsorship Obligations
Unrecorded Unconditional Purchase Obligation [Line Items]
2019		1,830,000
2020		1,233,000
2021		512,000
2022		518,000
2023		75,000
Thereafter		0
Unconditional purchase obligation		$ 4,168,000
Affiliated entity | Operating lease, Portland, Oregon
Operating Leased Assets [Line Items]
Number of limited liability companies | company		2
Right to buyout lease facility, minimum		$ 2,000,000.0
Lease payments to lessors		$ 164,000	136,000	120,000
Affiliated entity | Operating lease, Portland, Oregon | Headquarters Office Space And Restaurant Facility
Operating Leased Assets [Line Items]
Number of additional lease renewal periods | period		2
Operating lease term		10 years
Affiliated entity | Operating lease, Portland, Oregon | Other Facilities, Land And Equipment
Operating Leased Assets [Line Items]
Operating lease term		5 years
Affiliated entity | Operating lease, Kona, Hawaii
Operating Leased Assets [Line Items]
Number of additional lease renewal periods | period		2
Operating lease term		5 years
Sublease contracts expire date		Dec. 31, 2020
Percentage of common stock held by lessor		5.00%
Lease payments to lessors		$ 611,000	$ 574,000	$ 554,000
Amount paid for right of first refusal	$ 100,000