Investment in Variable Interest Entity - Additional Information (Detail) - USD ($) |
3 Months Ended | 6 Months Ended | |||
|---|---|---|---|---|---|
Jun. 30, 2016 |
Jun. 30, 2015 |
Jun. 30, 2016 |
Jun. 30, 2015 |
Dec. 31, 2015 |
|
| Variable Interest Entity [Line Items] | |||||
| Earnings (loss) in equity of unconsolidated affiliate | $ 100,000 | $ 100,000 | $ 100,000 | $ 200,000 | |
| Trade receivables | 1,500,000 | 1,500,000 | |||
| Other assets | $ 0 | $ 0 | $ 0 | ||
| PHIC's date of incorporation | May 26, 2011 | ||||
| PHI Century Limited [Member] | |||||
| Variable Interest Entity [Line Items] | |||||
| Investment in the common stock | 49.00% | ||||
| Allowance for Trade Receivables [Member] | |||||
| Variable Interest Entity [Line Items] | |||||
| Allowance for bad debts against trade receivables | $ 1,500,000 | ||||