Note 9 - Earnings Per Common Share (Details Textual)	Jul. 11, 2016
Dividends, Common Stock, Stock, Percentge	4.00%

Percentage of paid and unpaid common stock dividends declared with the form of settlement in stock.

No definition available.

Name:	hmta_DividendsCommonStockStockPercentge
Namespace Prefix:	hmta_
Data Type:	num:percentItemType
Balance Type:	na
Period Type:	duration