Annual report pursuant to Section 13 and 15(d)

Summary of Accounts Receivable (Detail)

v3.6.0.2
Summary of Accounts Receivable (Detail) - USD ($)
$ in Thousands
Dec. 31, 2016
Dec. 31, 2015
Accounts Receivable and Major Customers [Line Items]    
Customers $ 20,489 $ 23,481
Joint interest partners 7,238 18,381
Other 3,789 7,658
Accounts Receivable, Gross, Current, Total 31,516 49,520
Less: Allowance for doubtful accounts (2,421) (1,555)
Accounts receivable, net of allowance for doubtful accounts $ 29,095 $ 47,965