Quarterly report pursuant to Section 13 or 15(d)

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

v3.20.2
Long - term Debt - Summary of Repurchase of Senior Secured Note (Detail)
$ in Thousands
 9 Months Ended
Sep. 30, 2020
USD ($)
Debt Instrument [Line Items]  
Principal Repurchased $ 3,500
Cash Paid 3,400
Net Gain 49,000
Senior Secured Note [Member]  
Debt Instrument [Line Items]  
Principal Repurchased 38,659
Cash Paid 35,586
Bond Issue Costs 706
Net Gain $ 2,367
Senior Secured Note [Member] | Senior Secured Note Period One [Member]  
Debt Instrument [Line Items]  
Repurchase date Jan. 30, 2020
Principal Repurchased $ 2,250
Cash Paid $ 2,194
Percent face value 97.50%
Bond Issue Costs $ 34
Net Gain $ 22
Senior Secured Note [Member] | Senior Secured Note Period Two [Member]  
Debt Instrument [Line Items]  
Repurchase date Jan. 27, 2020
Principal Repurchased $ 1,245
Cash Paid $ 1,198
Percent face value 96.25%
Bond Issue Costs $ 20
Net Gain $ 27
Senior Secured Note [Member] | Senior Secured Note Period Three [Member]  
Debt Instrument [Line Items]  
Repurchase date Dec. 27, 2019
Principal Repurchased $ 3,090
Cash Paid $ 2,874
Percent face value 93.00%
Bond Issue Costs $ 49
Net Gain $ 167
Senior Secured Note [Member] | Senior Secured Note Period Four [Member]  
Debt Instrument [Line Items]  
Repurchase date Nov. 27, 2019
Principal Repurchased $ 5,183
Cash Paid $ 4,548
Percent face value 87.75%
Bond Issue Costs $ 82
Net Gain $ 553
Senior Secured Note [Member] | Senior Secured Note Period Five [Member]  
Debt Instrument [Line Items]  
Repurchase date Nov. 15, 2019
Principal Repurchased $ 3,791
Cash Paid $ 3,206
Percent face value 84.58%
Bond Issue Costs $ 61
Net Gain $ 524
Senior Secured Note [Member] | Senior Secured Note Period Six [Member]  
Debt Instrument [Line Items]  
Repurchase date Mar. 28, 2019
Principal Repurchased $ 2,000
Cash Paid $ 1,830
Percent face value 91.50%
Bond Issue Costs $ 36
Net Gain $ 134
Senior Secured Note [Member] | Senior Secured Note Period Seven [Member]  
Debt Instrument [Line Items]  
Repurchase date Mar. 28, 2019
Principal Repurchased $ 2,300
Cash Paid $ 2,125
Percent face value 92.38%
Bond Issue Costs $ 42
Net Gain $ 133
Senior Secured Note [Member] | Senior Secured Note Period Eight [Member]  
Debt Instrument [Line Items]  
Repurchase date Feb. 20, 2019
Principal Repurchased $ 125
Cash Paid $ 114
Percent face value 91.25%
Bond Issue Costs $ 2
Net Gain $ 9
Senior Secured Note [Member] | Senior Secured Note Period Nine [Member]  
Debt Instrument [Line Items]  
Repurchase date Feb. 19, 2019
Principal Repurchased $ 350
Cash Paid $ 319
Percent face value 91.25%
Bond Issue Costs $ 7
Net Gain $ 24
Senior Secured Note [Member] | Senior Secured Note Period Ten [Member]  
Debt Instrument [Line Items]  
Repurchase date Feb. 12, 2019
Principal Repurchased $ 1,325
Cash Paid $ 1,209
Percent face value 91.25%
Bond Issue Costs $ 25
Net Gain $ 91
Senior Secured Note [Member] | Senior Secured Note Period Eleven [Member]  
Debt Instrument [Line Items]  
Repurchase date Jan. 10, 2019
Principal Repurchased $ 570
Cash Paid $ 526
Percent face value 92.25%
Bond Issue Costs $ 9
Net Gain $ 35
Senior Secured Note [Member] | Senior Secured Note Period Twelve [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 Thirteen [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 Fourteen [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 Fifteen [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 Sixteen [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 Seventeen [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 Eighteen [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