New Lease Obligation (Narrative) (Details) - MINNESOTA	1 Months Ended
	May 31, 2018 USD ($) ft²	Sep. 30, 2018 ft²
Golden Valley [Member]
Operating Leased Assets [Line Items]
Mixed office and warehouse facility, square footage | ft²	61,208	50,724
Future minimum lease payments due | $	$ 7,900,000
Rent expense | $	$ 200,000
Bloomington [Member]
Operating Leased Assets [Line Items]
Mixed office and warehouse facility, square footage | ft²		10,165