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Common Dividends	12 Months Ended
Common Dividends	Dec. 31, 2015
Dividends [Abstract]
Common Dividends	Common Dividends COB is a legal entity separate and distinct from its banking and other subsidiaries and has in the past relied on dividends from the Bank as its primary source of liquidity. There are limitations and requirements imposed by applicable law and regulation on the payment of dividends by the Bank to COB, as well as by COB to its shareholders. See “Supervision and Regulation - Dividends.” COB did not declare any dividends with respect to its common stock in 2015.