CONDENSED CONSOLIDATED BALANCE SHEETS (Parentheticals) (USD $) In Thousands, except Share data, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
LIABILITIES AND SHAREHOLDERS’ EQUITY
Investments ($48,900 and $50,600 measured at fair value at June 30, 2014, and December 31, 2013, respectively)	$ 48,900	$ 50,060
Real estate and tangible water assets, net of $10,459 and $10,019 of accumulated depreciation at June 30, 2014, and December 31, 2013, respectively	10,459	10,019
Property, plant and equipment, net of $21,417 and $16,631 of accumulated depreciation at June 30, 2014, and December 31, 2013, respectively	$ 21,417	$ 16,631
Common stock, par value (in dollars per share)	$ 0.001	$ 0.001
Common stock, shares authorized (in shares)	100,000,000	100,000,000
Common stock, shares issued (in shares)	25,836,000	25,821,000
Common stock, shares outstanding (in shares)	22,768,000	22,747,000
Treasury stock, common shares held (in shares)	3,068,000	3,073,000