Credit Insurance Products and Reinsurance of Certain Risks - Additional Information (Detail) - USD ($) |
1 Months Ended | 6 Months Ended | 12 Months Ended | ||
---|---|---|---|---|---|
Sep. 30, 2015 |
Dec. 31, 2015 |
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
|
Insurance [Line Items] | |||||
Increase in letter of credit secured by cash deposit | $ 2,900,000 | ||||
Letter of credit secured by cash deposit | $ 2,900,000 | $ 2,900,000 | |||
Restricted cash | 10,506,000 | $ 10,506,000 | $ 1,901,000 | ||
Term of CPI Policy | 1 year | ||||
CPI policy commission earned | 0 | ||||
Recognized revenue | $ 100,000 | 200,000 | $ 200,000 | ||
Letter of Credit [Member] | |||||
Insurance [Line Items] | |||||
Restricted cash | $ 2,900,000 | $ 2,900,000 | $ 1,900,000 |