CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Jun. 30, 2013	Dec. 31, 2012
ASSETS
Valuation allowance	$ 50,635	$ 51,445
EQUITY
Common stock, shares authorized (in shares)	90,000,000	90,000,000
Common stock, no par value (in dollars per share)	$ 0	$ 0
Common stock, shares issued (in shares)	16,431,881	16,377,247
Common stock, shares outstanding (in shares)	16,340,697	16,290,136
Treasury stock, at cost	91,184	87,111