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Consolidated Statements of Equity - USD ($)
$ in Thousands
Series A Preferred Stock
Preferred Stock
Common Stock
Additional Paid-in Capital
Retained Earnings
Total
Balance at the beginning at Dec. 31, 2016 $ 120,789 $ 74 $ 1,503,784 $ (594,948) $ 1,029,699
Increase (Decrease) in Shareholders' Equity          
Net loss       (15,600) (15,600)
Conversion of 27,061,856 shares of Series A Preferred Stock $ (120,789) 270 120,519    
Nonvested stock amortization     711   711
Balance at the end at Mar. 31, 2017   344 1,625,014 (610,548) 1,014,810
Balance at the beginning at Dec. 31, 2017         975,027
Balance at the beginning at Dec. 31, 2017   345 1,628,355 (654,332) 974,368
Increase (Decrease) in Shareholders' Equity          
Net loss       (55,813) (55,813)
Nonvested stock amortization     493   493
Balance at the end at Mar. 31, 2018   $ 345 $ 1,628,848 $ (710,145) $ 919,048