Annual report pursuant to Section 13 and 15(d)

Long - term Debt - Summary of Repurchase of Senior Secured Note (Detail)

v3.19.1
Long - term Debt - Summary of Repurchase of Senior Secured Note (Detail)
$ in Thousands
 12 Months Ended
Dec. 31, 2018
USD ($)
Debt Instrument [Line Items]  
Cash Paid $ 15,443
Senior Secured Note [Member]  
Debt Instrument [Line Items]  
Principal Repurchased 16,430
Cash Paid $ 15,443
Senior Secured Note [Member] | Senior Secured Note Period One [Member]  
Debt Instrument [Line Items]  
Repurchase date Dec. 21, 2018
Principal Repurchased $ 2,000
Cash Paid $ 1,835
Percent face value 91.75%
Bond Issue Costs $ 38
Net Gain $ 127
Senior Secured Note [Member] | Senior Secured Note Period Two [Member]  
Debt Instrument [Line Items]  
Repurchase date Dec. 21, 2018
Principal Repurchased $ 1,850
Cash Paid $ 1,702
Percent face value 92.00%
Bond Issue Costs $ 35
Net Gain $ 113
Senior Secured Note [Member] | Senior Secured Note Period Three [Member]  
Debt Instrument [Line Items]  
Repurchase date Dec. 21, 2018
Principal Repurchased $ 1,080
Cash Paid $ 999
Percent face value 92.50%
Bond Issue Costs $ 21
Net Gain $ 60
Senior Secured Note [Member] | Senior Secured Note Period Four [Member]  
Debt Instrument [Line Items]  
Repurchase date Nov. 17, 2018
Principal Repurchased $ 1,500
Cash Paid $ 1,357
Percent face value 90.50%
Bond Issue Costs $ 29
Net Gain $ 114
Senior Secured Note [Member] | Senior Secured Note Period Five [Member]  
Debt Instrument [Line Items]  
Repurchase date May 04, 2018
Principal Repurchased $ 4,000
Cash Paid $ 3,770
Percent face value 94.25%
Bond Issue Costs $ 86
Net Gain $ 144
Senior Secured Note [Member] | Senior Secured Note Period Six [Member]  
Debt Instrument [Line Items]  
Repurchase date Apr. 10, 2018
Principal Repurchased $ 4,000
Cash Paid $ 3,850
Percent face value 96.25%
Bond Issue Costs $ 87
Net Gain $ 63
Senior Secured Note [Member] | Senior Secured Note Period Seven [Member]  
Debt Instrument [Line Items]  
Repurchase date Apr. 09, 2018
Principal Repurchased $ 2,000
Cash Paid $ 1,930
Percent face value 96.50%
Bond Issue Costs $ 43
Net Gain $ 27