Summary of Significant Accounting Policies (Details 3)	Dec. 31, 2016 USD ($)	Dec. 31, 2016 CNY (¥)	Dec. 31, 2015 USD ($)	Dec. 31, 2015 CNY (¥)
Summary of Significant Accounting Policies [Abstract]
Period-end spot rate	$ 1	¥ 6.94477	$ 1	¥ 6.4917
Average rate	$ 1	¥ 6.64410	$ 1	¥ 6.2288

Foreign exchange year end spot rate used to translate amounts denominated in functional currency to reporting currency.

No definition available.

Name:	fork_ForeignCurrencyExchangeYearEndSpotRate
Namespace Prefix:	fork_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant