CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)	Sep. 30, 2013	Dec. 31, 2012
Voting Common Stock [Member]
Common stock, par value	$ 0.1	$ 0.1
Common stock, shares authorized	12,500,000	12,500,000
Common stock, shares issued	2,905,757	2,852,616
Common stock, shares outstanding	2,905,757	2,852,616
Non-Voting Common Stock [Member]
Common stock, par value	$ 0.1	$ 0.1
Common stock, shares authorized	25,000,000	25,000,000
Common stock, shares issued	12,567,879	12,458,992
Common stock, shares outstanding	12,567,879	12,458,992