Consolidated Statements of Changes in Shareholders' Equity (Parenthetical) (Unaudited) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Cash dividend declared per share	$ 0.11	$ 0.16	$ 0.38	$ 0.38
Retained Earnings
Cash dividend declared per share	$ 0.11	$ 0.16	$ 0.38	$ 0.38
Treasury Stock
Treasury shares purchased shares			5,352	70,181
Treasury shares reissued shares			2,770
Additional Paid-in Capital
Treasury shares reissued shares			2,770