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Note 7 - Acquisitions and Assets Held for Sale (Details Textual)
$ in Thousands
3 Months Ended
Feb. 28, 2018
USD ($)
a
Mar. 31, 2017
USD ($)
Mar. 31, 2018
USD ($)
Dec. 31, 2017
USD ($)
Disposal Group, Including Discontinued Operation, Assets, Current, Total     $ 9,059 $ 9,462
Modular Construction and Manufacturing Plant Near Edmonton, Alberta, Canada [Member] | Canadian Segment [Member]        
Disposal Group, Including Discontinued Operation, Depreciation and Amortization   $ 100    
Undeveloped Land Positions in the British Columbia Segment [Member] | Canadian Segment [Member]        
Disposal Group, Including Discontinued Operation, Assets, Current, Total       $ 4,200
Lakeland [Member]        
Business Combination, Consideration Transferred, Total $ 28,000      
Payments to Acquire Businesses, Gross 23,500      
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable 4,500      
Business Combination, Contingent Consideration Arrangements, Range of Outcomes, Value, High $ 1,200      
Number of Rooms 400      
Area of Land | a 40      
Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill, Total $ 9,200      
Lakeland [Member] | Customer Contracts [Member]        
Finite-Lived Intangible Assets, Remaining Amortization Period 1 year 120 days