Commitments and Contingencies Lease Narrative (Details) |
3 Months Ended | |
|---|---|---|
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Mar. 31, 2020
USD ($)
|
Mar. 31, 2019
USD ($)
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|
| Lessee, Lease, Description [Line Items] | ||
| Gain (Loss) on Termination of Lease | $ 0 | $ 21,000 |
| Sublease Income | $ 0 | 38,000 |
| Lessee, Finance Lease, Term of Contract | 3 years | |
| Lessee, Operating Lease, Term of Contract | 4 years | |
| Lessee, Operating Lease, Number Of Offices | 2 | |
| Lessee, Operating Lease, Renewal Term | 5 years | |
| Minneapolis Headquarters [Member] | ||
| Lessee, Lease, Description [Line Items] | ||
| Gain (Loss) on Termination of Lease | $ 21,000 | |
| X | ||||||||||
- Definition Lessee, Operating Lease, Number Of Offices No definition available.
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| X | ||||||||||
- Definition Amount of gain (loss) on termination of lease before expiration of lease term. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Term of lessee's finance lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
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| X | ||||||||||
- Definition Term of lessee's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Term of lessee's operating lease, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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| X | ||||||||||
- Definition Amount of sublease income excluding finance and operating lease expense. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Details
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