Note 4 - Acquisitions	12 Months Ended
Dec. 31, 2019
Notes to Financial Statements
Business Combination Disclosure [Text Block]	4. Acquisitions On November 8, 2019, the Company acquired the 1010 Pacific Street property, a parcel of land, for $31,129, including acquisition costs of $129.

The entire disclosure for a business combination (or series of individually immaterial business combinations) completed during the period, including background, timing, and recognized assets and liabilities. The disclosure may include leverage buyout transactions (as applicable).

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-URI http://asc.fasb.org/topic&trid=2303972

Name:	us-gaap_BusinessCombinationDisclosureTextBlock
Namespace Prefix:	us-gaap_
Data Type:	nonnum:textBlockItemType
Balance Type:	na
Period Type:	duration