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MBS And Other Investments: Narrative-Realized Gains (Losses) (Details) (USD $)	3 Months Ended
	Dec. 31, 2014 security	Dec. 31, 2013 security	Sep. 30, 2014
Investments [Abstract]
Marketable Securities, Gain (Loss)	$ 45,000us-gaap_MarketableSecuritiesGainLoss
Gain on sale of securities	0tsbk_MarketableSecuritiesRealizedGain	0tsbk_MarketableSecuritiesRealizedGain
Loss on sale of securities	17,000tsbk_MarketableSecuritiesRealizedLoss	40,000tsbk_MarketableSecuritiesRealizedLoss
Held-to-maturity securities, realized loss, number of securities	11	14
Available-for-sale securities, realized loss, number of securities		6
Security owned and pledged as collateral	$ 4,630,000		$ 6,220,000

This item represents the net total realized and unrealized gain (loss) included in earnings for the period as a result of selling or holding marketable securities categorized as trading, available-for-sale, or held-to-maturity, including the unrealized holding gain (loss) of held-to-maturity securities transferred to the trading security category and the cumulative unrealized gain (loss) which was included in other comprehensive income (a separate component of shareholders' equity) for available-for-sale securities transferred to trading securities during the period. Additionally, this item would include any losses recognized for other than temporary impairments (OTTI) of the subject investments in debt and equity securities.

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