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Receivables (Tables)
 3 Months Ended
Mar. 31, 2016
Receivables [Abstract]  
Receivables
Receivables consist of:
 
First
Quarter-End
 
Year-End
 
2016
 
2015
 
(In thousands)
Funds held by qualified intermediary for potential 1031 like-kind exchange
$
—

 
$
14,703

Oil and gas revenue accruals
2,374

 
3,745

Other receivables and accrued interest
5,244

 
2,448

Oil and gas joint interest billing receivables
777

 
867

Other loans secured by real estate, average interest rates of 12.52% at first quarter-end 2016 and 11.31% at year-end 2015
1,485

 
2,130

 
9,880

 
23,893

Allowance for bad debts
(203
)
 
(237
)
 
$
9,677

 
$
23,656