CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, except Per Share data, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Current Assets
Investments at fair value	$ 2,528	$ 2,064
Shareholders Equity
Common stock, par value (in dollars per share)	$ 0	$ 0
Common stock, shares authorized (in shares)	48,000	48,000
Common stock, shares issued (in shares)	24,040	23,962
Common stock, shares outstanding (in shares)	24,040	23,962