Annual report pursuant to Section 13 and 15(d)

SUBSEQUENT EVENTS (Details Textual)

v3.10.0.1
SUBSEQUENT EVENTS (Details Textual)
 12 Months Ended
Feb. 25, 2019
USD ($)
a
Mar. 15, 2018
USD ($)
Dec. 31, 2018
USD ($)
Dec. 31, 2017
USD ($)
Dec. 31, 2016
USD ($)
Jun. 30, 2018
USD ($)
Subsequent Event [Line Items]            
Proceeds from Lines of Credit   $ 45,000,000 $ 39,500,000 $ 0 $ 7,000,000  
Line of Credit Facility, Expiration Period 5 years          
Maximum [Member]            
Subsequent Event [Line Items]            
Line of Credit Facility, Maximum Borrowing Capacity           $ 175,000,000
Minimum [Member]            
Subsequent Event [Line Items]            
Line of Credit Facility, Maximum Borrowing Capacity           $ 60,000,000
Revolving Credit Facility [Member]            
Subsequent Event [Line Items]            
Line of Credit Facility, Maximum Borrowing Capacity     $ 500,000,000      
Subsequent Event [Member] | Revolving Credit Facility [Member]            
Subsequent Event [Line Items]            
Area of Land | a 37,206          
Business Combination, Consideration Transferred, Equity Interests Issued and Issuable $ 30,000,000          
Payments to Acquire Businesses, Gross 270,000,000          
Business Combination, Consideration Transferred 300,000,000          
Subsequent Event [Member] | Revolving Credit Facility [Member] | Maximum [Member]            
Subsequent Event [Line Items]            
Line of Credit Facility, Maximum Borrowing Capacity 1,000,000,000          
Subsequent Event [Member] | Revolving Credit Facility [Member] | Minimum [Member] | Borrowing Base [Member]            
Subsequent Event [Line Items]            
Line of Credit Facility, Maximum Borrowing Capacity $ 425,000,000