Annual report pursuant to Section 13 and 15(d)

Per Share Data (Computations of Basic and Diluted Per Share) (Details)

v3.6.0.2
Per Share Data (Computations of Basic and Diluted Per Share) (Details) - shares
3 Months Ended 12 Months Ended
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2015
Sep. 30, 2015
Jun. 30, 2015
Mar. 31, 2015
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Earnings Per Share [Abstract]                      
Basic weighted-average common shares outstanding - basic (in shares) 188,837,490 181,032,730 180,674,937 181,363,446 181,423,440 183,519,768 184,743,052 184,998,551 182,987,850 183,660,993 182,768,494
Effect of dilutive securities:                      
Options to purchase common stock (in shares)                 0 0 15,411,800
Warrants to purchase common stock (in shares)                 0 0 8,331,539
Restricted shares (in shares)                 0 0 604
Dilutive potential common shares (in shares)                 0 0 23,743,943
Weighted average common shares outstanding and dilutive potential common shares (in shares) 188,837,490 181,032,730 180,674,937 181,363,446 181,423,440 183,519,768 184,743,052 184,998,551 182,987,850 183,660,993 206,512,437