Borrowings (Detail Textuals 1) (USD $)					1 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2013 Junior subordinated deferrable interest debentures	Dec. 31, 2012 Junior subordinated deferrable interest debentures	Mar. 26, 2003 RIVR Statutory Trust I	Mar. 26, 2003 RIVR Statutory Trust I Junior subordinated deferrable interest debentures	Mar. 26, 2003 RIVR Statutory Trust I Capital Units	Mar. 26, 2003 RIVR Statutory Trust I Common Stock
Debt Instrument [Line Items]
Number of shares issued							7,000	217
Liquidation amount per security issued							$ 1,000	$ 1,000
Aggregate amount of shares issued							$ 7,000,000	$ 217,000
Proceeds from issue of capital and common securities					7,217,000
Amount of fixed/floating rate junior subordinated deferrable interest debentures from the company	$ 49,717,000	$ 49,717,000	$ 7,217,000	$ 7,217,000		$ 7,217,000
Tenure for debentures, capital and common securities issued					30 years
Description of interest rate on debentures issued						Fixed/Floating interest at the annual rate of 6.4% for five years and thereafter bear interest at the rate of the 3-Month LIBOR plus 3.15%
Annual interest rate for five year						6.40%
Description of variable interest rate						3-Month LIBOR
Basis spread added to reference rate						3.15%