COMMITMENTS AND CONTINGENCIES (Details)	Dec. 31, 2017 USD ($)
Payment due by period, Contractual obligations, Operating leases, Less than 1 year	$ 1,081,927
Payment due by period, Contractual obligations, Operating leases, 1-3 years	2,084,258
Payment due by period, Contractual obligations, Operating leases, 3-5 years	2,154,566
Payment due by period, Contractual obligations, Operating leases, More than 5 years	10,271,981
Payment due by period, Contractual obligations, Operating leases, Total	15,592,733
Contractual obligations [Member]
Payment due by period, Contractual obligations, Operating leases, Less than 1 year	1,081,927
Payment due by period, Contractual obligations, Operating leases, 1-3 years	2,084,258
Payment due by period, Contractual obligations, Operating leases, 3-5 years	2,154,566
Payment due by period, Contractual obligations, Operating leases, More than 5 years	10,271,981
Payment due by period, Contractual obligations, Operating leases, Total	$ 15,592,733