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Commitments and Contingencies - Schedule of Contractual Obligations, Commitments and Contingencies (Detail)
$ in Thousands
Sep. 30, 2016
USD ($)
Long-Term Debt [Member]  
Commitment And Contingencies [Line Items]  
Payments due in 1 year $ 7,637
Payments due in 2 years 51
Payments due in 3 years 47
Payments due in 4 years 49
Payments due in 5+ years 1,758
Contractual obligations, commitments and contingencies 9,542
Operating Leases [Member]  
Commitment And Contingencies [Line Items]  
Payments due in 1 year 461
Payments due in 2 years 368
Payments due in 3 years 303
Payments due in 4 years 255
Payments due in 5+ years 74
Contractual obligations, commitments and contingencies 1,461
Interest on Outstanding Debt [Member]  
Commitment And Contingencies [Line Items]  
Payments due in 1 year 519
Payments due in 2 years 104
Payments due in 3 years 101
Payments due in 4 years 98
Payments due in 5+ years 746
Contractual obligations, commitments and contingencies $ 1,568