Annual report pursuant to Section 13 and 15(d)

Consolidated Balance Sheets (Parentheticals)

v3.8.0.1
Consolidated Balance Sheets (Parentheticals) - USD ($)
$ in Thousands
Dec. 31, 2017
Dec. 31, 2016
Held to maturity debt securities, fair value $ 250 $ 63,302
Common stock, par value (in dollars per share) $ 0.001 $ 0.001
Common stock, authorized (in shares) 100,000,000 100,000,000
Common stock, issued (in shares) 52,992,586 52,636,896
Common stock, outstanding (in shares) 52,992,586 52,636,896
Series A Preferred Stock [Member]    
Preferred stock, par value (in dollars per share) $ 0.001 $ 0.001
Preferred stock, liquidation preference, value $ 1,000 $ 1,000
Preferred stock, shares authorized (in shares) 0 0
Preferred stock, shares outstanding (in shares) 0 0
Undesignated Preferred Stock [Member]    
Preferred stock, par value (in dollars per share) $ 0.001 $ 0.001
Preferred stock, shares authorized (in shares) 1,000,000 1,000,000
Preferred stock, undesignated (in shares) 1,000,000 1,000,000