Prepaid Lease Payments (Details Textual) - HKD HKD in Thousands |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
|
| Prepaid Lease Payments [Line Items] | |||
| Amortization Of Prepaid Lease Payments | HKD 1,527 | HKD 1,527 | HKD 1,531 |
| Shenzhen One [Member] | |||
| Prepaid Lease Payments [Line Items] | |||
| Lease Expiration Date | Dec. 31, 2037 | ||
| Shenzhen Two [Member] | |||
| Prepaid Lease Payments [Line Items] | |||
| Lease Expiration Date | Dec. 31, 2037 | ||
| Shenzhen Three [Member] | |||
| Prepaid Lease Payments [Line Items] | |||
| Lease Expiration Date | Feb. 28, 2040 | ||