Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Dec. 31, 2015	Dec. 31, 2014
Preferred stock
Preferred stock, shares authorized	5,000,000	5,000,000
Common stock
Common stock, no par value (in dollars per share)	$ 0.00	$ 0.00
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	34,353,014	33,905,060
Common stock, shares outstanding	34,353,014	33,905,060
Series C preferred stock
Preferred stock
Preferred stock, per share stated value (in dollars per share)	$ 3.25	$ 3.25
Preferred stock, shares issued	0	348,697
Preferred stock, shares outstanding	0	348,697