AGREEMENT AND PLAN OF MERGER (Details) $ / shares in Units, $ in Millions	Dec. 31, 2016 USD ($) item $ / shares
Number of banks prior to the merger \| item	2
Bright Star Inc.
Share price \| $ / shares	$ 26.00
Termination fee \| $	$ 2.0

Amount payable as per merger agreement which provides that upon termination of the merger agreement under certain circumstances, the company will be obliged to pay a stated termination fee.

No definition available.

Name:	gtwn_BusinessAcquisitionTerminationFee
Namespace Prefix:	gtwn_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant