CONDENSED CONSOLIDATED BALANCE SHEETS (Unaudited) (Parenthetical) - $ / shares	Jun. 30, 2017	Dec. 31, 2016
SHAREHOLDERS' EQUITY
Preferred stock, par value (in dollars per share)	$ 0	$ 0
Preferred stock, authorized (in shares)	2,000,000	2,000,000
Preferred stock, issued (in shares)	0	0
Preferred stock, outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 0	$ 0
Common stock, authorized (in shares)	150,000,000	150,000,000
Common stock, issued (in shares)	110,875,610	103,396,245
Common stock, outstanding (in shares)	110,875,610	102,776,539
Treasury stock (in shares)	0	619,706