CONDENSED CONSOLIDATED BALANCE SHEETS (unaudited) (Parenthetical) (USD $)	Jun. 30, 2014	Dec. 31, 2013
STOCKHOLDERS' EQUITY
Preferred shares, par value (in dollars per share)	$ 0	$ 0
Preferred shares, authorized (in shares)	2,000,000	2,000,000
Preferred shares, issued (in shares)	70,000	0
Preferred shares outstanding (in shares)	70,000	0
Common shares, par value (in dollars per share)	$ 0	$ 0
Common shares, authorized (in shares)	125,000,000	125,000,000
Common shares, issued (in shares)	72,268,526	67,412,139
Common shares, outstanding (in shares)	66,869,984	56,714,424
Treasury stock (in shares)	5,398,542	10,697,715