Condensed Consolidated Statement of Comprehensive Income (Loss) (Unaudited) (Parenthetical) - USD ($)	3 Months Ended
	Mar. 31, 2017	Sep. 30, 2016	Mar. 31, 2016	Sep. 30, 2015
Statement of Comprehensive Income [Abstract]
Unrealized gain (loss) on securities arising during period, tax	$ 1,000	$ 1,000	$ 2,000	$ 2,000